Slides work, but nothing else works on battery power
I have a 1999 Sunnybrook 33FKS. The slides are the only things that work off of battery power; none of the lights, water pump, or fridge work. The batteries on the trailer are new and fully charged. I looked at all the circuit breakers, fuses, grounds, etc and nothing looks out of place or bad. Everything works great when the trailer is plugged in. I replaced the 12v circuit breaker just incase that was bad (read another thread that suggested that). I'm at a loss of what else to do. Any suggestions would help.