I am new to rving and have bought a 1992 36 foot carriage 5th wheel. I am going through the process of checking everything out. Good news is everything is working except for the roof a/c. It has a 50 amp service and the only plug I have at home is adapted down to regular 110 plug. That is running the fridge and all the lights in it. I thought it would maybe at least run the fans to see if it is working but I cannot get any lights or anything whatsoever to come on pertaining to the a/c.Is there somthing I am not doing or do I need to get bigger service plugged in to the rv. Do my batteries have anything to do with it. I wouldnt think they would but again I am new to this and have NO clue.Any and all help greatly appreciated!!