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12-Volt Feed at Trailer Connector Not Active on 2016 Ram 3500


I rigged my 7 way trailer plug as per your trailer diagram for a dodge ram truck. all the lights work fine but the 12v batteryaux wire has nothing. thanks


Expert Reply:

We've ran into this before, you've either got a blown or a missing 30A fuse in position # F30 in the fuse box in the engine compartment. Also check # F87 for a 10A. Once the fuse is installed, that circuit should power up and work fine for you.

expert reply by:
Mike L

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