RE: Electrical Problem with 93 E350 Eldorado camper
Is it possible that the prior owner installed a double contact bulb (1157)instead of a single contact.(1156)in one of your ceiling lights?
RE: Newbie here - seeking advice on a few issues with motorhome
You may have a bad vacuum hose leading to the diaphram that regulates the flow of air,(hot and cold) on the heater itself or a bad diaphram.
Good luck.Hope you find problem.