3 Wire Trailer Wiring Diagram. Trailer Wiring Connector Diagrams Conductor Plugs. The following trailer wiring diagram(s) and explanations are a cross between an electrical schematic and wiring on a trailer.
Trailer plug wiring is standardized across all vehicles, no point trying to find vehicle specific info. Do you know if the "brake controller output" pin has any output on our trucks if there's no brake controller installed? That said, for specific situations, there are industrial standards with different connectors and wire arrangements.
Our trailer wiring diagram is a colour coded guide designed to help you wire your trailer plug or socket.
But wiring a trailer may not be easy.
The first thing you need to do is make sure that your connector works properly. Ask any auto electrician, a very common trailer wiring fault is usually caused by the family pet thinking it's a chew toy! I've provide three different wiring diagrams at the end of the video for a better understanding.