Towing Package Wiring Diagram
4 pin trailer wiring diagram.
Towing package wiring diagram. To connect the electric system of your trailer to the vehicle you will be using special connector. Wiring diagram that the ford replacement oem tow package wiring harness 118243 uses if you check out the picture i attached the middle set of 7 ways is the wiring diagram colors you ll need to use for the ford replacement oem tow package wiring harness 118243 that you referenced. 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. 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. Check out or trailer wiring diagrams for a quick reference on trailer wiring. Below is the generic schematic of how the wiring goes. In the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest.
You can use a circuit tester to verify connections. 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.