Trailer Charging Wire
 

My buddy just bought a 08 mega cab 2500. He wants to charge his enclosed trailer battery while he hauls it to the dunes. There is no power to the 12+ pin on the 7 pin.... I know on my Duramax there is a fuse that Chevy sends empty.... is the dodge the same way? He does not have a owners manual, so if so, can someone show me where this fuse is? Thanks

the fuse is in the fuse block under the hood and they are all numbered



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Miine came in with the fuse installed, but maybe not all. Make sure he was checking the right pin and had a good ground. And, possibly the person that owned the truck before him installed a relay that is key operated - - no power on that line if the switch is off.

Bob

X2............no relay though, just stock.