Originally Posted by bahumbug
.................... I assume one of the wires going to the House Positive is from the Chassis Battery.
Yes. One from the house battery will be connected to the isolator.
There might be a -neg ground wire to the frame.
There could be a +pos wire to the generator starter if you have a gen set.
Sometime accessories get wired right to the battery instead of the DC panel. And wires to an inverter if you have one.
The converter probably only charges the house battery. It is still rare to find setups that charge and maintain both the house and chassis battery.
I know the feeling of figuring all this out without schematics, no labels etc. My van was built by someone. I spent a long
time just looking
at everything trying understand all the wiring. Finally it all started making sense.