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How to Add 4-Way and 7-Way Trailer Connectors on a 2015 Nissan Frontier PRO-4X  

Updated 03/31/2018 | Published 03/30/2018

Question:

I have a 2015 Nissan frontier pro-4x that I need to get a wiring harness. I have a utility trailer that requires a 4 pin and a small adventure trailer that takes a 7 pin. Id like to just buy one harness but havent seen one. What harness do I need? Thank you

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Expert Reply:

All of the trailer wiring harnesses that are custom designed to fit your 2015 Nissan Frontier are either a 4-way or a 7-way connector. However, if you install a 7-way harness like part # 118266 and replace the final connector with part # HM40920 you'll have exactly what you're trying to accomplish. Part # HM40920 has both a 4- and 7-way and plugs into the same port that the # 118266 wiring uses.

If your adventure trailer has electric brakes then you also need a brake controller. I recommend the Prodigy P3, part # 90195, because of how easy it is to setup and use. It's one of our top sellers for a reason. It's also easy to install in your truck using the adapter # 3050-P.

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Charles S

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