7 pin trailer plug wire diagram10/13/2023 ![]() In this case, you can go with one of universal trailer wiring kits the aftermarket offers today. If you own an older vehicle, chances are it will have neither trailer package factory installed nor T-connectors available for it.This vehicle-to-trailer wiring harness creates a standard trailer wiring connection by plugging into vehicle harness and tail light assembly, and then routing the 4-way harness to the rear end of a vehicle. If your late model car, truck, or SUV does not have a trailer package from the factory, you may go with a T-connector made specifically for your make and model.This is the best case scenario, you’ll only need to buy the appropriate wiring harness with the right connectors on each end. If your vehicle came prewired for towing, it may have a factory trailer harness connection (USCAR connector) in the rear bumper.To determine how to wire up trailer lights, you need to know whether your vehicle has a factory-installed trailer package and whether a plug-and-play T-connector is available for it on the market. They developed a universal trailer connector that has been used on their vehicles since the 1990s. This organization (United States Council for Automotive Research) united three major American automakers (Chrysler, Ford, and GM) in their intention to advance automotive technologies. Many modern tow-capable trucks and SUVs, especially those by the Big Three, come equipped with trailer packages from the factory as part of the USCAR program. Now that you know the types of connectors, you have to determine what you have on your vehicle to make the connection to a trailer. Truck Trailer Light Wiring: Options & Packages However, in the simplest scenario on how to wire trailer lights, if you’ve bought a new vehicle, you only have to find a factory-installed connector on it and get the right harness to attach it to the trailer.Īccess our store as a guest! 7-way connector: Trailer wiring color code explanation Because installation works related to electricity scare many vehicle owners away, they prefer the experts at trailer shops to do the job for them instead of trying to figure out how things work. ![]() 7 pin trailer wiring diagram with brakesīefore you tow any trailer, you should ensure it has functional trailer lights.Truck Trailer Light Wiring: Options & Packages.7-way connector: Trailer wiring color code explanation.6-way connector: Trailer wiring color code explanation.5-way connector: Trailer wiring color code explanation.4-way connector: Trailer wiring color code explanation.
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