Car Trailer Wiring Harness Diagram

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.

Car trailer wiring harness diagram. Mounting your trailer wiring harness. Expand the same for additional axles. This is accomplished by tapping into the tow vehicle s electrical harness to transfer power to the trailer wiring system. Trailer wiring diagrams trailer wiring connectors various connectors are available from four to seven pins that allow for the transfer of power for the lighting as well as auxiliary functions such as an electric trailer brake controller backup lights or a 12v power supply for a winch or interior trailer lights.

Complete with a color coded trailer wiring diagram for each plug type this guide walks through various trailer wiring installation solution including custom wiring splice in wiring and replacement wiring. When it is needed for towing simply pull the connector out and shut the trunk or rear door. Venter nosecone and fridges. These 2 wire diagrams fit the needs of most trailers.

This helps to extend the life of the connector by protecting it from the elements and accidental damage. If your vehicle is not equipped with a working trailer wiring harness there are a number of different solutions to provide the perfect fit for your specific vehicle. Trailer connectors are used between the two to allow disengagement when not. Use only the needed wires and ignore the others.

The image above shows a single axle trailer and the next image shows wiring for tandem axles. If you own an older vehicle chances are it will have neither trailer package factory installed nor t connectors available for it. Only the blue brake and white ground wires are different.