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Recommended Replacement 4-Pole Wishbone Trailer Wiring Harness  


I have a 4 way trailer plug that has 5 wires coming out. The ground portion of the plug is shot and I am looking for a replacement plug but cant seem to find. Can you help me locate please? Thanks


Expert Reply:

It sounds like your trailer has a special type of 4-pole connector called a wishbone harness, such as 20-foot # A20WB or 35-foot # A35W42B. These wishbone harnesses simply use two brown running light wires to make it easier to wire your trailer's lights. The dual wires mean there is no need to run a jumper wire from one side of the trailer to the other; one wire runs down each side of the trailer frame.

You can use butt connectors like # 05731-5 which you can wrap in electrical tape for protection after making your connections.

I linked an article on trailer wiring for your reference.

expert reply by:
Adam R

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