Maybe it’s time to find a different source of heat to keep you warm inside your RV. Have you considered a catalytic heater? Catalytic heaters require no electricity to operate. Catalytic heaters also consume propane at a much slower rate.
Knowing what to do when you deal with your RV electrical system is extremely important. Having a little bit of insight into your RVs electrical system is helpful even if you don’t want to do any wiring because knowledge is power. Be careful with it, though.