We own a 2014 Thor Citation. Batteries drained while vehicle was sitting for a couple months. We metered the cables at the battery coming from the converter when plugged into shore power and there was nothing. We checked and the house lights work when plugged into shore. We checked the breaker for the converter and the large fuses for the converter and both are good. Makes sense since the lights, radio etc work. Just no power at the batteries. Any help is appreciated.