Trailer Wiring Diagram 7 Pin 4 Wires. Wiring your four-pin trailer can be a challenge when you first do it, but it's a simple do-it-yourself task. Wrap the spliced wires in electrical tape and make a wiring harness.
Connectors wire directly into your vehicle's factory tail light to allow you to connect a trailer lighting and wiring system directly into your vehicle. The trailer wiring diagrams listed below, should help identify any wiring issues you may have with your trailer. Your trailer wiring plug doesn't match the one on your vehicle.
The wife and kids stare daggers into your head as you curse your way through hours of agonizing wiring mishaps. "Trailer Wiring Diagrams." "Trailer Wiring for the Do-It-Yourselfer." trailerwiring.com.
Trailer plug wiring is standardized across all vehicles, no point trying to find vehicle specific info.
It gets complicated when you have trailers with more cables, and in this case, you need an adapter to make the connections. The first step in wiring your trailer cables is to ground the white cable first. The trailer wiring diagrams listed below, should help identify any wiring issues you may have with your trailer.