2006 GMC Sierra 3500 Trailer Wiring Kits

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. Easy twist-mount installation requires no tools.

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

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

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. 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. Easy twist-mount installation requires no tools.

Product Features:

• Endurance Professional Grade
• Plug-In Simple!® Wiring Kit
• Utilizes OEM connectors create an exact fit and maximum weatherproofing
• Corrosion resistant terminals
• Weatherproof lid opens 180 degrees
• Oversized hinge offers ultimate durability
• Superior Ergonomics

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

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

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

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

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

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

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 or trailer hitch. 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. These CURT extension harnesses are designed to work with 7-way RV blade connectors and come with 7′ of wire. Ten harnesses are included in each package. They are 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
• 7′ extension with right-angle plugs for easy installation
• Spring-loaded dust cover keeps connector clean when not in use
• Slit loom keeps wires contained and well protected

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 Premium electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.