My switch does not turn off everything... my batteries have run flat several times. I now have a solar panel and solar panel trickle charger. Make sure you turn off the antenna booster. The batteries still support the converter panel and some other stuff.. real PITA... I check on the trailer each month to enure things are ok... last thing I need is 2 frozen batteries and a $300 bill to replace them.
2016 F-350 Crew Cab 4x4 Dually Diesel, 2013 38BR Office config with all options and upgrades but Ceiling Fan and Ice Maker.
Generally the Propane Detector remains powered, not sure what else.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top