1998 Ford Expedition Trailer Wiring

Keep Your 1998 Ford Expedition in Top Shape with Quality Trailer Wiring

Whether you’re repairing or upgrading your Trailer Wiring, using high-quality parts is key to keeping your 1998 Ford Expedition looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Trailer Wiring Harness and Trailer Wiring Kits. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 1998 Ford Expedition Trailer Wiring at Advance Auto Parts is around $31.08, with a range that starts at $7.99 and goes up to $57.99. With 11 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Dual-Output 7/4-Way Connector (Plugs into USCAR), Replacement USCAR Socket with 24in. Wires (Vehicle Side), and Replacement OE 4-Way Flat Socket (T s into USCAR) start at just $24.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Trailer Wiring, don’t forget to check out other key components like Trailer Brake Control Parts and Trailer Hitches. At Advance Auto Parts, we’re here to help you keep your 1998 Ford Expedition in peak condition, inside and out.

Essential 1998 Ford Expedition Trailer Wiring

CURT – Replacement OE 4-Way Flat Socket (Plugs into USCAR) (Part No.55515)

Replacement OE 4-Way Flat Socket (Plugs into USCAR)

from

$30.99
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product Features:
  • Plugs into USCAR socket to provide 4-way flat trailer wiring connector
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Slit loom keeps wires contained and well protected
  • Backed by a limited one-year warranty
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Hopkins – 40974, Multi-Tow® Exact Fit OEM replacement 7 Blade and 4 Flat Towing Connector (Part No.40974)

40974, Multi-Tow® Exact Fit OEM replacement 7 Blade and 4 Flat Towing Connector

from

$39.99
Tow more than one trailer? This exact OEM replacement Multi-Tow® design features multiple towing options from one connector by providing sockets for towing both 7 blade and 4 flat trailers. This connector is Plug-In Simple!® with no cutting or splicing, saving you time by utilizing an OEM connector to create an exact fit for easy installation and maximum weatherproofing.

Product Features:
  • Multi-Tow® provides multiple towing options from one connector
  • Plug-In Simple!® Wiring Kit
  • Utilizes OEM connectors create an exact fit and maximum weatherproofing
  • Impact and corrosion resistant
  • Pre-greased terminals for added protection
  • Includes Step-By-Step Instructions
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CURT – Replacement OE 4-Way Flat Socket (T s into USCAR) (Part No.55384)

Replacement OE 4-Way Flat Socket (T s into USCAR)

from

$33.49
Stress is the last thing you should feel when towing a trailer — whether you’re hauling your RV to that favorite camping destination, your ATVs up to the hunting grounds or your fishing boat to the new hidden hotspot. At CURT, we think your towing equipment should add to the enjoyment of your experience, not detract from it. CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Though this special socket is not equipped on every vehicle, a CURT custom wiring connector (also called a T-connector) utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle’s wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. This particular connector provides a 4-way flat socket while retaining use of the existing OEM socket. It is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). It comes with a dust cover to keep the connector socket clean when not in use.

Product Features:
  • Plugs into USCAR connection to add 4-way flat and retain use of existing socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Slit loom keeps wires contained and well protected
See More

CURT – Custom Wiring Harness, 4-Way Flat Output, Select Ford, Lincoln, Mercury Vehicles (Part No.55344)

Custom Wiring Harness, 4-Way Flat Output, Select Ford, Lincoln, Mercury Vehicles

from

$57.99
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness — also called a T-connector — is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Ford E150, E250, E350, E450, E550 and Econoline Super Duty, Ford Escort, Expedition, Excursion, Explorer, Sport Trac, Focus, Ranger and F150, Lincoln Aviator and Navigator and Mercury Mountaineer and Tracer (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination — maybe it’s the boat landing at your favorite fishing spot, maybe it’s a campsite that overlooks one of nature’s masterpieces, or maybe it’s the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.

Product Features:
  • Plugs into vehicle tail light assembly to provide a 4-way flat socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Backed by a limited one-year warranty
See More

Carquest Premium – Trailer Connector Kit (Part No.TCA1252)

Trailer Connector Kit

from

$41.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest Premium – Trailer Connector Kit (Part No.TCA1137)

Trailer Connector Kit

from

$69.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

CURT – Heavy-Duty Replacement OE 7-Way RV Blade Socket (Plugs into USCAR) (Part No.55416)

Heavy-Duty Replacement OE 7-Way RV Blade Socket (Plugs into USCAR)

from

$20.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way RV blade connector is designed to plug into a USCAR socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It is intended to be a replacement trailer wiring connector, plugging into a standard USCAR socket (see application info to verify fitment with your vehicle). It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).

Product Features:
  • Weather-resistant dust cover features a rubber insert to seal out moisture
  • Spring-loaded cover also helps keep connector clean when not in use
  • Plugs into USCAR socket to provide 7-way RV blade trailer wiring connector
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
See More

CURT – Replacement OE 7-Way RV Blade Socket (Twists into USCAR) (Part No.56415)

Replacement OE 7-Way RV Blade Socket (Twists into USCAR)

from

$24.49
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way OEM USCAR replacement connector is designed to plug into a twist-in OEM vehicle socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).

Product Features:
  • Plugs into USCAR socket to provide 7-way RV blade trailer wiring connector
  • Twist-in, plug-and-play design eliminates the need for cutting or splicing
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Spring-loaded dust cover keeps connector clean when not in use
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Hopkins – 40950, Endurance Multi Tow« Ford / GM 7 Blade and 4 Flat Towing Connector (Part No.40950)

40950, Endurance Multi Tow« Ford / GM 7 Blade and 4 Flat Towing Connector

from

$36.99
By incorporating Endurance design features that include oversized hinges, internal grommets for enhanced weather proofing and a lid that opens 180 degrees, this connector is guaranteed to last for years of trouble free use. Multi-Tow® design feature adds multiple towing options from one connector by providing sockets for towing both 7 blade and 4 flat trailers. This connector is Plug-In Simple!® with no cutting or splicing, saving you time by utilizing an OEM connector to create an exact fit for easy installation and maximum weatherproofing. Four hole mount installation for standard mounting brackets.

Product Features:
  • Endurance Professional Grade
  • Plug-In Simple!® Wiring Kit
  • Utilizes OEM connectors create an exact fit and maximum weatherproofing
  • Multi-Tow® provides multiple towing options from one connector
  • Weatherproof lid opens 180 degrees
  • Oversized hinge offers ultimate durability
  • Superior Ergonomics
  • For Use w/Factory Tow Package
  • Impact And Corrosion Resistant
See More

CURT – Replacement OE 7-Way RV Blade Socket (Plugs into USCAR) (Part No.55415)

Replacement OE 7-Way RV Blade Socket (Plugs into USCAR)

from

$20.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way RV blade connector is designed to plug into a USCAR socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It is intended to be a replacement trailer connector, plugging into a standard USCAR socket (see application info to verify fitment with your vehicle). It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection.

Product Features:
  • Plugs into USCAR socket to provide 7-way RV blade trailer wiring connector
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Spring-loaded dust cover keeps connector clean when not in use
See More

CURT – Replacement USCAR Socket with 24in. Wires (Vehicle Side) (Part No.56229)

Replacement USCAR Socket with 24in. Wires (Vehicle Side)

from

$24.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way USCAR replacement harness is designed to replace an existing USCAR plug and supply power for tail lights, turn signals, electric trailer brakes, a battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with color-coded wires and 24″ of bonded wire for easy splicing into your vehicle’s wiring system. This 7-way USCAR connector is a female-end socket, specifically designed for the vehicle side of the connection.

Product Features:
  • Replaces damaged or missing USCAR vehicle harness
  • Includes 24″ color-coded, bonded wires for easy installation
See More

Hopkins – 48035, 4 Flat Vehicle Side Towing Connector (48") (Part No.48035)

48035, 4 Flat Vehicle Side Towing Connector (48")

from

$7.99
Get your vehicle ready to tow the most common type of trailer on the road by installing this vehicle side 4 flat. This 4 flat connector carries the trailer’s basic lighting and includes printed wire functions that make installation quick.

Product Features:
  • 48 inch length
  • Corrosion Resistant Terminals
  • Most Commonly Used Trailer Connector
  • Found On Small Boat/Utility
  • Printed wire functions for easy wire reference
  • Printed Wire Functions For Easy Wire Reference
  • 100 Percent Tested
See More

Carquest Premium – Trailer Connector Kit (Part No.PTC1525)

Trailer Connector Kit

from

$83.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Husky Towing – 7-Way Blade And 4-Way Flat, Plug-In Style (Part No.33058)

7-Way Blade And 4-Way Flat, Plug-In Style

from

$53.99
Husky Towing Products offers a complete line of hitches, brake assemblies, jacks, sway control solutions, and essential towing accessories. Each Husky product is precision engineered, constructed with durable, quality materials, and is rigorously tested to industry safety standards. Hitches are what Husky does best. From Class III receivers, to 5th wheels, to weight distribution hitches, Husky hitches help keep your towables safe and secure. Husky also offers accessories to accompany your hitch including hitch balls, shanks, locks, and more Electric tongue jacks, electrical and brake products, and cargo carriers are just a few other categories that make any towing experience easier.

Product Features:
  • Connects To Your Vehicle OEM Tow Package Connector
  • Easy-Open, Weatherproof Lid With Rugged, Oversized Hinge Allows Lid To Open 180 Degrees
  • Impact And Corrosion Resistant
  • Plug-In Simple(R) , No Cutting, No Splicing, Saves Time
See More

CURT – Dual-Output 6/4-Way Connector (Plugs into USCAR) (Part No.55664)

Dual-Output 6/4-Way Connector (Plugs into USCAR)

from

$46.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This special custom wiring connector actually provides two connector sockets for a multipurpose option. It plugs into an OEM USCAR connector and offers a 4-way flat and 6-way round connector (see application info to verify fitment with your vehicle). It also comes with a mounting bracket for easy installation. CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product Features:
  • Plugs into USCAR socket to provide 4-way and 6-way trailer wiring connectors
  • Fits USCAR-equipped vehicles with factory tow plugs only
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 6-way round socket adds connection for electric brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
See More

Husky Towing – 4-Way Flat And 7 Rav, With Dust Cover/ Cable Ties And Grease Packet (Part No.13092)

4-Way Flat And 7 Rav, With Dust Cover/ Cable Ties And Grease Packet

from

$51.99
Husky Towing Products offers a complete line of hitches, brake assemblies, jacks, sway control solutions, and essential towing accessories. Each Husky product is precision engineered, constructed with durable, quality materials, and is rigorously tested to industry safety standards. Hitches are what Husky does best. From Class III receivers, to 5th wheels, to weight distribution hitches, Husky hitches help keep your towables safe and secure. Husky also offers accessories to accompany your hitch including hitch balls, shanks, locks, and more Electric tongue jacks, electrical and brake products, and cargo carriers are just a few other categories that make any towing experience easier.

Product Features:
  • Husky Branded Replacement Parts Ensure Proper Fit And Function
  • Weatherproof Design
  • Constructed with durable, quality materials, and is rigorously tested to industry safety standards
  • Easy to install
See More

Husky Towing – 4 Way Flat And 7 Way Round, Utilizes Oem Connectors, 2 Door Connector Protection (Part No.33059)

4 Way Flat And 7 Way Round, Utilizes Oem Connectors, 2 Door Connector Protection

from

$44.99
Husky Towing Products Offers Innovative Designs, High Quality, Custom Installation And Safe, Easy Operation. Husky Is Source For A Complete Line Of Hitches, Electrical Products And Towing Accessories.

Product Features:
  • Provides Multiple Towing Options From One Connector
  • Connects To Your Vehicle OEM Tow Package Connector
  • Exact OEM Replacement For Enhanced Fit And Maximum Weatherproofing
  • Applies To Over 18 Different Vehicle Makes Equipped With A Factory Tow Package
  • High Impact, ABS Plastic Construction
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Hopkins – Plug-and-Play Towing Wiring Kit with OEM Connectors (Part No.41155)

Plug-and-Play Towing Wiring Kit with OEM Connectors

from

$25.99
Dont splice onto your vehicles factory wiring harness. Simply plug in this Hopkins? vehicle wiring kit featuring exact OEM matching connectors for a perfect weather-tight fit. This kit includes the accessories needed to get you towing faster.

Product Features:
  • Plug-In Simple? Wiring Kit
  • Utilizes OEM Connectors For Enhanced Fit And Weatherproofing
  • Includes Vehicle Side 4 Flat
  • Corrosion Resistant Terminals
  • Impact And Corrosion Resistant
  • Includes Dust Cover And Grease Packet To Prevent Corrosion
  • Includes Step-By-Step Instructions
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Husky Towing – Vehicle Side, 7-Way Round, Without Lead Wire (Part No.30175)

Vehicle Side, 7-Way Round, Without Lead Wire

from

$18.29
Husky Towing Products offer innovative designs, high quality, custom installation and safe, easy operation. Husky is source for a complete line of hitches, electrical products and towing accessories.

Product Features:
  • Durable Lid Opens 180 Degrees
  • Ultimate Weatherproofing
  • Compatible With Ford, GM And Other Popular Tow Vehicles
  • Plug-In Simple(R) For Quick And Easy Installation Or Replacement
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Hopkins – 40955, Multi-Tow® FORD / GM 7 Blade and 4 Flat Wiring Kit (Part No.40955)

40955, Multi-Tow® FORD / GM 7 Blade and 4 Flat Wiring Kit

from

$39.99
Tow more than one trailer? Multi-Tow® design feature adds multiple towing options from one connector by providing sockets for towing both 7 blade and 4 flat trailers. This connector is Plug-In Simple!® with no cutting or splicing, saving you time by utilizing an OEM connector to create an exact fit for easy installation and maximum weatherproofing.

Product Features:
  • Multi-Tow® provides multiple towing options from one connector
  • Plug-In Simple!® Wiring Kit
  • Utilizes OEM connectors create an exact fit and maximum weatherproofing
  • Includes mounting bracket and hardware
  • Impact and corrosion resistant
  • Fits in standard 7 blade bracket
  • Includes Step-By-Step Instructions
See More

CURT – Dual-Output 7/4-Way Connector (Plugs into USCAR) (Part No.55774)

Dual-Output 7/4-Way Connector (Plugs into USCAR)

from

$31.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This special custom wiring connector actually provides two connector sockets for a multipurpose option. It plugs into an OEM connector and offers a 4-way flat and 7-way RV blade connector. It comes with a mounting bracket for easy installation and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product Features:
  • Plugs into USCAR socket to provide 4-way and 7-way trailer wiring connectors
  • Fits USCAR-equipped vehicles with factory tow plugs only
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 7-way RV blade socket adds reverse lights, electric brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
See More

Most Popular Trailer Wiring Harness for 1998 Ford Expeditions

Enhance your 1998 Ford Expedition with one of the 2 Trailer Wiring Harness we have in stock, starting at just $31.49.

CURT – Dual-Output 7/4-Way Connector (Plugs into USCAR) (Part No.55774)

Dual-Output 7/4-Way Connector (Plugs into USCAR)

from

$31.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This special custom wiring connector actually provides two connector sockets for a multipurpose option. It plugs into an OEM connector and offers a 4-way flat and 7-way RV blade connector. It comes with a mounting bracket for easy installation and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product Features:
  • Plugs into USCAR socket to provide 4-way and 7-way trailer wiring connectors
  • Fits USCAR-equipped vehicles with factory tow plugs only
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 7-way RV blade socket adds reverse lights, electric brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
See More

CURT – Dual-Output 6/4-Way Connector (Plugs into USCAR) (Part No.55664)

Dual-Output 6/4-Way Connector (Plugs into USCAR)

from

$46.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This special custom wiring connector actually provides two connector sockets for a multipurpose option. It plugs into an OEM USCAR connector and offers a 4-way flat and 6-way round connector (see application info to verify fitment with your vehicle). It also comes with a mounting bracket for easy installation. CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product Features:
  • Plugs into USCAR socket to provide 4-way and 6-way trailer wiring connectors
  • Fits USCAR-equipped vehicles with factory tow plugs only
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • 6-way round socket adds connection for electric brakes and auxiliary power
  • Dust covers included to keep connectors clean when not in use
  • Slit loom keeps wires contained and well protected
  • Metal bracket securely mounts wiring to the vehicle or trailer hitch
See More

Best-Selling 1998 Ford Expedition Trailer Wiring Kits

Upgrade your Expedition with one of our 9 best-selling Trailer Wiring Kits, earning an average 3.5 stars rating across 5 reviews.

Hopkins – 48035, 4 Flat Vehicle Side Towing Connector (48") (Part No.48035)

48035, 4 Flat Vehicle Side Towing Connector (48")

from

$7.99
Get your vehicle ready to tow the most common type of trailer on the road by installing this vehicle side 4 flat. This 4 flat connector carries the trailer’s basic lighting and includes printed wire functions that make installation quick.

Product Features:
  • 48 inch length
  • Corrosion Resistant Terminals
  • Most Commonly Used Trailer Connector
  • Found On Small Boat/Utility
  • Printed wire functions for easy wire reference
  • Printed Wire Functions For Easy Wire Reference
  • 100 Percent Tested
See More

CURT – Replacement USCAR Socket with 24in. Wires (Vehicle Side) (Part No.56229)

Replacement USCAR Socket with 24in. Wires (Vehicle Side)

from

$24.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way USCAR replacement harness is designed to replace an existing USCAR plug and supply power for tail lights, turn signals, electric trailer brakes, a battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with color-coded wires and 24″ of bonded wire for easy splicing into your vehicle’s wiring system. This 7-way USCAR connector is a female-end socket, specifically designed for the vehicle side of the connection.

Product Features:
  • Replaces damaged or missing USCAR vehicle harness
  • Includes 24″ color-coded, bonded wires for easy installation
See More

CURT – Replacement OE 4-Way Flat Socket (T s into USCAR) (Part No.55384)

Replacement OE 4-Way Flat Socket (T s into USCAR)

from

$33.49
Stress is the last thing you should feel when towing a trailer — whether you’re hauling your RV to that favorite camping destination, your ATVs up to the hunting grounds or your fishing boat to the new hidden hotspot. At CURT, we think your towing equipment should add to the enjoyment of your experience, not detract from it. CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Though this special socket is not equipped on every vehicle, a CURT custom wiring connector (also called a T-connector) utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle’s wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. This particular connector provides a 4-way flat socket while retaining use of the existing OEM socket. It is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). It comes with a dust cover to keep the connector socket clean when not in use.

Product Features:
  • Plugs into USCAR connection to add 4-way flat and retain use of existing socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Slit loom keeps wires contained and well protected
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CURT – Replacement OE 4-Way Flat Socket (Plugs into USCAR) (Part No.55515)

Replacement OE 4-Way Flat Socket (Plugs into USCAR)

from

$30.99
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.

Product Features:
  • Plugs into USCAR socket to provide 4-way flat trailer wiring connector
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Slit loom keeps wires contained and well protected
  • Backed by a limited one-year warranty
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CURT – Heavy-Duty Replacement OE 7-Way RV Blade Socket (Plugs into USCAR) (Part No.55416)

Heavy-Duty Replacement OE 7-Way RV Blade Socket (Plugs into USCAR)

from

$20.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way RV blade connector is designed to plug into a USCAR socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It is intended to be a replacement trailer wiring connector, plugging into a standard USCAR socket (see application info to verify fitment with your vehicle). It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).

Product Features:
  • Weather-resistant dust cover features a rubber insert to seal out moisture
  • Spring-loaded cover also helps keep connector clean when not in use
  • Plugs into USCAR socket to provide 7-way RV blade trailer wiring connector
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
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CURT – Replacement OE 7-Way RV Blade Socket (Plugs into USCAR) (Part No.55415)

Replacement OE 7-Way RV Blade Socket (Plugs into USCAR)

from

$20.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way RV blade connector is designed to plug into a USCAR socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It is intended to be a replacement trailer connector, plugging into a standard USCAR socket (see application info to verify fitment with your vehicle). It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection.

Product Features:
  • Plugs into USCAR socket to provide 7-way RV blade trailer wiring connector
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Spring-loaded dust cover keeps connector clean when not in use
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CURT – Replacement OE 7-Way RV Blade Socket (Twists into USCAR) (Part No.56415)

Replacement OE 7-Way RV Blade Socket (Twists into USCAR)

from

$24.49
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way OEM USCAR replacement connector is designed to plug into a twist-in OEM vehicle socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).

Product Features:
  • Plugs into USCAR socket to provide 7-way RV blade trailer wiring connector
  • Twist-in, plug-and-play design eliminates the need for cutting or splicing
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • Spring-loaded dust cover keeps connector clean when not in use
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CURT – Custom Wiring Harness, 4-Way Flat Output, Select Ford, Lincoln, Mercury Vehicles (Part No.55344)

Custom Wiring Harness, 4-Way Flat Output, Select Ford, Lincoln, Mercury Vehicles

from

$57.99
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness — also called a T-connector — is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Ford E150, E250, E350, E450, E550 and Econoline Super Duty, Ford Escort, Expedition, Excursion, Explorer, Sport Trac, Focus, Ranger and F150, Lincoln Aviator and Navigator and Mercury Mountaineer and Tracer (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination — maybe it’s the boat landing at your favorite fishing spot, maybe it’s a campsite that overlooks one of nature’s masterpieces, or maybe it’s the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.

Product Features:
  • Plugs into vehicle tail light assembly to provide a 4-way flat socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Backed by a limited one-year warranty
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Carquest Premium – Trailer Connector Kit (Part No.TCA1252)

Trailer Connector Kit

from

$41.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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FAQs for 1998 Ford Expedition Trailer Wirings

What are the best-selling Trailer Wirings for 1998 Ford Expeditions?

Out of 11 Trailer Wirings that fit 1998 Ford Expeditions, the following parts are the top sellers:

What’s the price range for 1998 Ford Expedition Trailer Wiring?

The prices of Trailer Wiring for the 1998 Ford Expedition range from $7.99 up to $57.99 for the most premium parts.

What is the average price of a Trailer Wiring Trailer Wiring for a 1998 Ford Expedition?

The average price for Trailer Wirings for the 1998 Ford Expedition is $31.08. Keep in mind the variety of part types within our Trailer Wiring category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Trailer Wiring for other Ford Expedition model years?

Yes, we carry Trailer Wiring for 26 model years of Ford Expeditions between 1997 and 2024. The following model years are the most popular for Trailer Wiring purchases: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, and 2015.

What are the cheapest Trailer Wiring for my 1998 Ford Expedition?

Does Advance Auto Parts sell Trailer Wiring for any other 1998 Ford models?

Yes. We stock Trailer Wiring for 13 other popular 1998 Ford models. Some of the most popular are 1998 F-150 Trailer Wiring, 1998 F-250 Trailer Wiring, 1998 Mustang Trailer Wiring, 1998 E-250 Econoline Trailer Wiring, and 1998 E-350 Econoline Trailer Wiring.

What are the top-rated Trailer Wiring that fit the 1998 Ford Expedition?

The one 1998 Ford Expedition Trailer Wiring we have in stock is the 48035, 4 Flat Vehicle Side Towing Connector (48"). It is rated 3.5 stars and costs $7.99.

What types of Trailer Wiring do you sell for my 1998 Ford Expedition?

As of 4/10/25, these are some of the most in-demand types of Trailer Wiring for a 1998 Ford Expedition:

Can I get help with 1998 Ford Expedition Trailer Wiring orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Ford Trailer Wiring and more.

What is your return policy for Ford Expedition Trailer Wiring?

Advance Auto Parts keeps returns simple. For new Ford Expedition Trailer Wiring and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.