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Parts Needed to Wire a 5-Way to a Boat Trailer


Hi Team, I have a 18 foot Fourwinns boat, the trailer is aprox 21 feet from front to back, I need a 5 way complete wiring harness. What can you recommend? The trailer is a fold away typenot sure if thats the correct terminology Thanks team.


Helpful Expert Reply:

The best solution is going to be the part # A25W5B.

What you would want to do is use the part # A25W5B to provide the wiring and connector for your trailer but then use a junction box like part # 38656 to make organizing the wiring and running each of the wires to each circuit easier. I attached an install video for this box for you to check out as well.

I also attached a help article with trailer wiring diagrams as well.

helpful expert reply by:
Jameson C

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