can someone help me. I have put twso new batteries in my Terry fifth wheel. My slide out and landing gear works good but that is it. When I am pluged into the house or the generator everything works fine. But when it is on its own. Nothing works but the slide out and landing gear. I have checked all the fuses and they are good the breakers are all set and the batteries are new and connected the breakers by the batteries are both hot(have power). This has drove me to the farm. Please help. thanks Bart.