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Troubleshooting Nissan Frontier That Has Constant Power To The Trailer Brakes

Question:

When reviewing articles the factory crossed wires do you have some guidance on how to fix this that you can send me. I just purchased from you the trailer break and harness . Hooked it all up with ease to find that the factory wires are crossed up. Thank you for all your help y’all really do offer service after the sale.

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Expert Reply:

I am sorry to hear that the factory 12v power and trailer brake wires on your Nissan Frontier are crossed!

Luckily this issue is an easy fix, by removing the wires from the 1 o'clock 12v power pin, and 5 o'clock trailer brake pin on your 7 way connector, and swapping them allowing your trailer brake controller to work properly.

I included a diagram of the 7-way connector showing the two pins, and a helpful article on trailer wiring for you to take a look at.

click to enlarge
expert reply by:
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Samuel C

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