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Wire Color for Each Function on 4-Way Trailer Wiring

Question:

I know somewhere here i read what colors go to each light, thought I printed it but I have the A20WB harness, simple rewire on my 5 x 10 utility trailer. Just want to confirm which colors go to which light please.

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Expert Reply:

You likely saw it on our wiring help article which I linked.

The traditional wire coloring of a standard 4-way like # A20WB is both browns to your running lights, one per side of the trailer, green to your right turn and brake light, yellow to the left turn and brake light, and the white is the ground wire.

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Charles S

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