Trailer Wiring Color Diagram | Trailer Wiring Diagram Trailer Wiring Color Diagram – 7 way trailer wiring color diagram, trailer light color wiring diagram, trailer plug wiring color diagram, People today comprehend that trailer is a vehicle comprised of very complicated mechanics. This vehicle is designed not just to travel 1 location to another but also to carry heavy loads. This article will be discussing Trailer Wiring Color Diagram. Wiring Trailer Lights with a 7-Way Plug (It's Easier Than The minimum suggested wire size for a 7-way trailer plug is 16 gauge for the turn signals, brake lights, reverse lights, and running light wires. The suggested minimum for the ground, brake power, and battery hot lead wires is 12 gauge. Shop Custom Wiring. Related searches for wiring diagram for a trailer lights 7 pin trailer wiring diagram5 wire trailer wiring diagram4 wire trailer wiring diagramcar trailer wiring diagram7 pin trailer plug wiringhow to wire trailer lightstrailer light wiring diagram ukled trailer light wiring diagram