Can't help but I took mine to a "factory service" place 3 times --first 2 it quit in a week third time I by passed all the wiring and although he said it was fixed I have never hooked it back up. That was 5 years ago. I have a jumper from chassis battery to house batteries and charge them while driving. I also carry a battery charger in case I need to charge the house while parked for an extended period. Kind of Red Neck but it has worked fine for me.