First post. Joined to get some insight to my problem. Forgive me if I'm going over covered ground. I purchased a 2000 Summerwind slide in camper last fall. I'm having an issue with my dc power. Everything functions on shore power but no main lights on battery power. that sounds simple but it gets more confusing. All the fuses are fine. checked with a tester. I still have 12 volt power to kitchen ( hood- light and fan). Furnace fan runs, but not full strength and it wont ignite. I installed a digital voltage display. reads 12.6 volts. confirmed with a multimeter. Hooked up a charger at 20 amps, charged at 15.4 volts, no change. I know i need at least 10 volts to ignite the furnace so I'm obviously not getting that voltage to the furnace or the lights but I dont know why. It was working when I stored it last fall and again this spring when I checked it. Here is the only thing that might be a clue. I have run power from my truck back to the battery in the camper in order to charge it while im driving. I have some terminals mounted by the battery door and it grounded out against the truck box when I slid it in. Noticed some current when i was tightening the turnbuckles. fixed it. Removed the converter and had a local RV dealership check it. Works perfect. Any leads would be appreciated. Thanks Don