Wire Colors and Functions for 4 Wires Pulled Out of a Trailer Connector

Question:

I have a trailer plug that the wires were pulled out and dont know which plug they go to. I have a white wire, yellow wire,green wire, yellow/brown wire,and green/brown wire. Could u tell me which number plug they r on the plug itself. Thanks

asked by: Donny

Expert Reply:

Is this the trailer side connector? It is likely that you have white for ground, yellow for left turn and brake lights, green for right turn and brake lights, and the 2 brown wires are running light circuits, one for the left side (yellow/brown) and one for the right side (green/brown).

I imagine that you have a 4-Way flat connector. On the trailer side the one covered pin is the ground, next to it is the running light circuit, then left turn/brake, and last is right turn and brakes.

If you have a different connector then you can follow the diagrams in the help article I have linked to the right.

expert reply by: Michael H