Originally Posted by DFOUSS
Thanks for the welcome. I check both with the electric connected and with it disconnected. I was checking right at the batteries. Both the house battery and the engine battery. Same reading all the time which was about 3 volts, pretty death... I checked the voltage and switched the switch, again no change.
It a minimum of 8-9 volts on the house batteries to activate the latching relay controlled by the master power or use/store switch. If the house batteries get below 9 volts and the latching relay is off, the batteries must be charged by an external source. At least that is the way my coach works.