2014 Bay star 3103 has decided to have electrical issues. Dash light will not go off, had to remove fuse 41 as unit was getting hot and afraid of fire. When using headlights, blower for dash ac/heater will not work. We have had rig at both RV service and Ford for diag, neither one can fix this issue and pass it off on the other. Replaced batteries and BIM/BIRD component. First on got hot, smoked and was compromised. Where would you go from here?