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How To Wire A 7-Way Trailer Connector With A Wishbone Trailer Wiring Harness

Question:

Can you show me how to wire a wish bone wire to a 7 way plug . I just need to know about the running and tail lights???

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Expert Reply:

The best way to wire a 7-way plug on your trailer that has a 4-way wishbone harness is to use a junction box like part # 38656 from Spectro.

The wishbone harness has two separate running light brown that connect both sides of the trailer running lights without the need to run a jumper wire between the two sides of the trailer.

The # 38656 junction box will give you a nice way to wire together the trailer's leads and the 7-way plug like Hopkins part # H20044. You would use the junction box to connect the wires as follows:

Yellow trailer wire connects to connector red wire; green trailer wire connects to brown connector wire; white connects to white; the two brown trailer wires (for running lights) connect to connector green wire. The balance of the wires can be capped if they are not being used on the 7-way. I have attached a link to a helpful article on trailer wiring you can check out.

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Jeffrey L

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