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Installing a 4-Pole Flat Harness and the 5-Wire Wishbone Harness


I have 4 wire harness coming off car,white,green,yellow,brown.5 wire harness coming off trailer,white,green,yellow and two brown.how would I wire this up?thanks for getting back to me.


Expert Reply:

Sounds like your trailer has a wishbone wiring harness, like # A20WB. This harness uses two brown running light wires to allow you to wire the trailer running lights without running a jumper wire from one side of the trailer to the other.

If you need to wire a 4-pole on the trailer side, then all you will have to do is at the splice two brown wires together. Then use only one of the brown wires at the trailer plug.You can use # 05731-5 butt connectors to splice the two brown wires and # A10-4404VP to wire the trailer end.

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