Hi there. First-time poster here. Just bought a 2007 Fleetwood Niagara last weekend and I'm trying to troubleshoot a power supply issue. When we're hooked up to shore power, everything works great. When we are on battery, everything is dead. No lights, radio, outlets, fridge, or anything. 1: The PO installed brand new battery the day we came to pick up the camper. It seems to work because the power roof lift works (up and down). I believe it is hooked up correctly (pic attached) 2: I have checked breakers and a visual inspection of fuses looks like everything is good. I don't know anything about electrical or how to test connections with a tester I cannot figure out why we still don't get power off the battery. Here are a few pics of the battery and the wiring at the 2 corners between the wall and roof. Any suggestions on next steps to troubleshoot are appreciated!