2018 Ram 3500 Trailer Wiring Kits

Enhance and Protect Your 2018 Ram 3500 with Quality Trailer Wiring Kits

Maintaining the performance of your 2018 Ram 3500 starts with choosing the right parts, and high-quality Trailer Wiring Kits help ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Trailer Wiring Kits specifically for the 2018 Ram 3500, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Trailer Wiring Kits for Every Budget

Finding affordable, quality Trailer Wiring Kits is easy at Advance Auto Parts. With prices starting as low as $37.99 and an average price of $85.49, you can choose one that fits your budget while delivering the quality you expect. Our Trailer Wiring Kits are competitively priced, ranging from $37.99 to $149.99, so you get value without compromising on strength or reliability.

Explore Related Parts for a Complete Solution

To further enhance your 2018 Ram 3500, don’t miss our related parts categories, including Trailer Tow Harness Connectors and Trailer Wiring Harness. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.

Trailer Wiring Kits for Your 2018 Ram 3500

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

$41.99
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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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

$37.99
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
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CURT – 10ft. Custom Wiring Harness Extension (Adds 7-Way RV Blade to Truck Bed) (Part No.56000)

10ft. Custom Wiring Harness Extension (Adds 7-Way RV Blade to Truck Bed)

from

$149.99
There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs offer a deluxe, home-away-from-home experience unlike any other, while gooseneck trailers possess a strength that far surpasses most other trailer options. As with any trailer, however, 5th wheels and goosenecks must be equipped with the proper lighting and electrical systems, and tend to require even more complex connectors than a standard receiver-type trailer setup. Make things simple with a CURT 5th wheel / gooseneck extension harness. These wiring harnesses are designed to put an extra connector socket in the bed of your pickup truck while still retaining power to the rear connector socket mounted on your bumper. This is done by plugging into the back of the existing original equipment (OEM) harness and routing through the body of the truck to a hole in the truck bed, providing a connector that is ready to accommodate your 5th wheel or gooseneck trailer. This CURT extension harness is designed to work with 7-way RV blade connectors and comes in a length of 10′. It is compatible with certain models of Chevrolet, Dodge, Ford, GMC, Nissan, Ram and Toyota (see application to verify fitment). When you need a towing electrical solution that allows you to switch back and forth between your receiver hitch and specialized trailer hitch, CURT gets you plugged in.

Product Features:
  • Routes a 7-way RV blade socket into truck bed while retaining use of rear socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • Allows for easy connection of 5th wheel or gooseneck wiring
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • 10′ extension with right-angle plug for easy installation
  • Spring-loaded dust cover keeps connector clean when not in use
  • Slit loom keeps wires contained and well protected
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CURT – Custom Towed-Vehicle RV Wiring Harness (Part No.58916)

Custom Towed-Vehicle RV Wiring Harness

from

$110.99
Towing your vehicle behind your RV is a great way to experience more of the adventure on your cross-country excursions. Whether you’re towing a compact car or a full-size truck, CURT has the perfect solution to help you Bring It! CURT towed-vehicle RV harnesses are a vehicle-specific, plug-and-play solution to wiring your vehicle for dinghy towing. They use original-equipment-compatible connectors to plug into your vehicle’s wiring system without any cutting, splicing or soldering required. They provide a standard 4-way flat connector to plug into the RV socket and synchronize the vehicle’s tail lights, turn signals and brake lights with the RV’s. Because each towed-vehicle RV harness has a vehicle-specific design, installation is fast and easy. This particular RV dinghy towing wiring harness is designed for specific years of the Ram or Dodge Ram 1500, 2500 and 3500. CURT RV harnesses are also built to provide long-lasting operation. They feature integrated block diodes that protect the vehicle’s circuits from the RV signals. They isolate the sensitive vehicle electronics, keeping them from overheating and short circuiting. Every CURT towed-vehicle RV harness comes ready to install with all necessary hardware included. They also come with a 4-way flat extension to provide plenty of length to plug into the RV socket, as well as a connector mounting bracket to mount the connector on the vehicle.

Product Features:
  • Connects a towed vehicle to an RV using a standard 4-way flat trailer plug
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • Integrated block diodes isolate sensitive vehicle electronics from RV signals
  • Uses towed vehicle’s existing taillights, brake lights and turn signals
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CURT – Custom Towed-Vehicle RV Wiring Harness (Part No.58906)

Custom Towed-Vehicle RV Wiring Harness

from

$108.99
Towing your vehicle behind your RV is a great way to experience more of the adventure on your cross-country excursions. Whether you’re towing a compact car or a full-size truck, CURT has the perfect solution to help you Bring It! CURT towed-vehicle RV harnesses are a vehicle-specific, plug-and-play solution to wiring your vehicle for dinghy towing. They use original-equipment-compatible connectors to plug into your vehicle’s wiring system without any cutting, splicing or soldering required. They provide a standard 4-way flat connector to plug into the RV socket and synchronize the vehicle’s tail lights, turn signals and brake lights with the RV’s. Because each towed-vehicle RV harness has a vehicle-specific design, installation is fast and easy. This particular RV dinghy towing wiring harness is designed for specific years of the Ram 1500, 2500 and 3500 with LED taillights. CURT RV harnesses are also built to provide long-lasting operation. They feature integrated block diodes that protect the vehicle’s circuits from the RV signals. They isolate the sensitive vehicle electronics, keeping them from overheating and short circuiting. Every CURT towed-vehicle RV harness comes ready to install with all necessary hardware included. They also come with a 4-way flat extension to provide plenty of length to plug into the RV socket, as well as a connector mounting bracket to mount the connector on the vehicle.

Product Features:
  • Connects a towed vehicle to an RV using a standard 4-way flat trailer plug
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • Integrated block diodes isolate sensitive vehicle electronics from RV signals
  • Uses towed vehicle’s existing taillights, brake lights and turn signals
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Carquest Premium – Trailer Connector Kit (Part No.TCC1255)

Trailer Connector Kit

from

$62.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
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FAQs for 2018 Ram 3500 Trailer Wiring Kits

Which Trailer Wiring Kits are the top sellers for the 2018 Ram 3500?

Out of 6 Trailer Wiring Kits that fit 2018 Ram 3500s, the following parts are the top sellers:
10ft. Custom Wiring Harness Extension (Adds 7-Way RV Blade to Truck Bed)
from $149.99
This product is not rated
10ft. Custom Wiring Harness Extension (Adds 7-Way RV Blade to Truck Bed)
Trailer Wiring Kits

How can I make sure that a part will be compatible with my 2018 Ram 3500?

Our Ram 3500 aftermarket and OEM parts are designed specifically for the 2018 model. You can always find your specific fitment and compatibility for your 2018 Ram on an individual product page.

What is the price range for 2018 Ram 3500 Trailer Wiring Kits?

The range of prices of Trailer Wiring Kits for the 2018 Ram 3500 goes from $37.99 up to $149.99 for the most premium parts.

What is the average price of 2018 Ram 3500 Trailer Wiring Kits?

2018 Ram 3500 Trailer Wiring Kits average $85.49 for our selection of OEM and aftermarket parts.

Does Advance Auto Parts sell Trailer Wiring Kits for other Ram 3500 model years?

Yes, we currently stock Trailer Wiring Kits for 13 model years of Ram 3500s, from 2011 to 2025. Model years 2023, 2022, 2021, 2020, 2019, 2017, 2016, 2015, and 2014 are the most popular for Trailer Wiring Kits purchases.

Can I get help with 2018 Ram 3500 Trailer Wiring Kits orders?

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

What is your return policy for Ram 3500 Trailer Wiring Kits?

Advance Auto Parts keeps returns simple. For new Ram 3500 Trailer Wiring Kits and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.