7 Wire Trailer Wiring Diagram Colors. This color trailer wiring diagram will help you when you need to connect your trailer to your truck's wiring harness or repair a wire that isn't working. Trailer Wiring Diagrams showing you the typical wiring for most single axle trailer and tandem axle trailers.
A colour coded trailer plug wiring guide to help you require your plugs and sockets. Wiring for AC and DC power distribution branch circuits are color coded for identification of individual wires. Here's the wiring diagrams showing the pin out for the plug and socket for the most common circle and rectangle trailer connections in use in Australia.
I also have a wiring harness that has colors (many colors) not shown on the diagram.
Trailer wiring guide, including best practices for automotive type wiring systems and how to install a new trailer connector pigtail.
The Diagram below shows the proper way to wire the connector to your trailer or vehicle. Connect each colour wire on a light to the corresponding wire of the same colour on the trailer wiring. Wiring for AC and DC power distribution branch circuits are color coded for identification of individual wires.