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2012 4x4 4.0l auto - trailer brake module

858 Views 4 Replies 5 Participants Last post by  Racksaw, 
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I installed a plug and play brake module and a seven wire trailer plug. Used existing wiring with appropriate adapters. Trailer lights work, but no brake power at the plug. Regardless of the sensitivity setting. I do not know if my Frontier has a trailer towing package - how do I tell? Is there a breaker or relay I need to add somewhere?
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The adapter

If you find everything is already wired on your truck, the adapter may need to have two wires swapped. The adapter has some screws and the blue and black wires get swapped. I have an 08 and had to install the relays in the kick panel and I went ahead and drilled a hole in the bumper to put the 7-pin plug there.
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