I have a 36 Winnebago Brave. I have it plugged into an outlet in my garage. This may be really dumb, but why do I have electic to my tv's and microwave, but not to lights, heater, water pump, etc? Not sure what other information you may need to try and help me.
This unit is new to me, and I know it has an electrical management system. The power cord in the back does not plug into anything. I have reset all the GFCI outlets and none of the breakers are tripped.
It sounds like your entire 12v is dead. Do you have a converter? This converts 120 volt to 12 volt for power to your 12 volt systems (lights, heater (has 12v control board) and water pump. Have you checked the 120 volt circuit breaker that feeds the converter? Do you have a voltmeter? If the converter is on, are you getting power out of the 12 volt side? Check the 3 wires to see that they are connected well. This includes the ground, bare or green wire. Make sure the ground is well connected to the frame. If all of this is well, and your batteries are dead, I would disconnect them, as they might be drawing down all of your power.
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and two Spastic Border Collies U.S. Army Retired 2013 Tiffin Allegro 36LA 2007 Saturn Outlook, FROG