I put a brand new 12V battery in our Rockwood 8265S 5th wheel before we went camping last weekend, but I had no lights on 12V power. It didn't even have any power to light the fridge on propane. Charged the battery on a portable charger & put it in the trailer, but still no power. However when I hook the trailers tail light pig tail into the truck, the fridge came on on propane & I have power to the lights. Also, with shore power plugged in, and the battery out of the trailer, the passenger side slide motor won't work, but with the battery in the trailer and shore power plugged in, the passenger side slide motor works. Very confusing. I hooked the new battery to my boat's trolling motor, and it spun the prop real good. Does this sound like my converter is bad?
2008 Rockwood 8265S
2006 Chevy 1500 Ext. Cab LT w/5.3V8 & Tow Pkg.