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Recommended Trailer WIring for 4-Way Flat, 5-Way Flat, 6-Way Round, and 7-Way  


Need wire harness for trailer


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For a Trailer Wire Harness I recommend the following options:

For a 4-way Trailer Harness use # A35W42B. This is a wishbone harness so it has wiring to each side of the trailer separately. Likewise for a 5-way wiring harness use # A40W5B.

For a 6-way, I recommend using a junction box like # 38656 with Connector and Lead Wire # H20036
For a 7-way, I recommend # HS381-9000. The remaining wires will use # 12-2-1 or # 12-1-1 sold by the foot.

I've attached an article to assist.

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