So Christopher Columbus....you are telling me that by not turning the battery switch off, we created the light problem. Wow Really??? We now have it hooked up to electricity and we just found out that the AC will not power up, the Frig will not come on and the outside radio will not come on. We did do a walk through at the dealer after other repairs were done which were leaky windows, shower door leak, ceiling trim buckling, black tank flush problem and other problems that had absolutely nothing to do with electrical. Of course, the dealer did not turn on AC or outside radio or lights, during the walk thru because that was not in the list of repairs. Sorry if I sound a little frustrated but getting ready to go camping on Monday, Aug 27 but definitely can't go without AC or Frig. Just wondering where in the world do we go from here.. Could this possibly be an easy fix?? It sure doesn't sound like it to me.