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Why Does Trailer's Wiring have Two Brown Wires


The wires from the trailer are yellow, green, and two brown. The green and yellow ones are paired with a brown wire. The harness has green, yellow, brown, and white. Do you know how I can match these up?


Expert Reply:

The brown (running light) wires all run to each other as they carry the same circuit. The reason there is two browns on the trailer side is because there are running lights that are on both sides of the trailer.

Aside from that all the rest of the colors match with the white running to the trailer frame as a ground.

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expert reply by:
Jameson C

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