Trailer Light Plug Wiring Diagram

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 light plug wiring diagram.

4 pin trailer wiring diagram. The trailer wiring diagram shows this wire going to all the lights and brakes. Right turn signal stop light green left turn signal stop light yellow taillight license side marker brown and a ground white. This type of connector is normally found on utvs atvs and trailers that do not have their own braking system.

The four wires control the turn signals brake lights and taillights or running lights. 4 way trailer connectors are. Trailer wiring diagrams 4 way systems. Above we have describes the main types of trailer wiring diagrams.

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. As the name implies they use four wires to carry out the vital lighting functions. They also provide a wire for a ground connection. 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.

4 way flat molded connectors allow basic hookup for three lighting functions. 4 way trailer connectors are typically used on small trailers such as boat snowmobile utility and other trailers that that do not use brakes. Some trailer builders just connect this wire to the frame then connect the ground from all the other lights and accessories to the frame as well. Note that this type of 4 pin connector is less common that 4 pin flat connector.