You don't really "need" the battery cutoff switch in the on position when connected to shore power but if the switch is OFF you will not be charging then battery from the shore power connec… (View Post)
@Jersey Keep in mind that the Mr. Buddy heater (if that is what you have) is propane operated and will need combustion air. If you run it in an enclosed trailer with no ventilation you could have gre… (View Post)