Old thread but wanted to update
I just realized that I never updated this. We went the hole trip fighting this thing. By the time we would get to our next stop after driving 8-10 hours the battery was dead. Come to find out I have no 12V power to my plug in the back of the truck. I have not tore into it just yet but I do have power to the bumper.
I ran the plug over the tailgate and plugged it in on the last leg home and batter was fully charged when we arrived.
I hooked up the plug in the bed myself. I used a wiring harness from etrailer.com that was a simple plug and play system. So I don't know just yet what is going on.
2015 Chevrolet Silverado 2500HD 4x4 Z71 Duramax/Allison Combo Pull Rite, ISR Series Superglide 16K, LoadLifter 5000 Ultimate W/ WirelessOne
Current RV: 2016 Palomino Columbus 381FL Fifth Wheel
Lippert Flex Air Pin Box, LT235-85-16 GY G614
Nights Camped 2013 - 6 2014 - 7 2015 - 12 2016 - 29 2017 - 4