Trailer Wiring Diagram 7 Way To 4 Way

Trailer Wiring Diagram 7 Way To 4 Way. The original wiring on my boat trailer was damaged and installed incorrectly by the previous owner. Trailer plug wiring is standardized across all vehicles, no point trying to find vehicle specific info.

Hoppy 7-Pole Trailer End Plug (Edgar Maldonado)

You must check the trailer manual to see if the wiring is correct, but normally the white wire is called the ground wire. The question is if I cut the wires at the hitch side will it work with the diagrams shown. Determine a suitable mounting point on the tow vehicle for the adapter.

Someone correct me if I'm wrong there.

I've provide three different wiring diagrams at the end of the video for a better understanding.

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See diagram below for wire locations. The trailer side is the reverse of what you see below, but if you remember DRIVER SIDE/CURB SIDE it can be followed easily. You must check the trailer manual to see if the wiring is correct, but normally the white wire is called the ground wire.