Mex: that's the strange part, they aren't in lockstep, there is a large delay in the response. If I put a small battery charger on one battery, only *that* battery increases in voltage.
The issue seems to only arise in high-draw situations, like using the heater blower, or recharging at 15+amps from the genny. And then, the chassis battery will charge/discharge at a MUCH slower rate and the voltage will not rise/drop like the house battery.
As to the battery studs, the chassis battery connects to one side, and the other side has the house battery cable and the cable to the generator starter motor. Should that be wired differently?
I'm not sure I understand on the coil wire. It is just a 12v manually switched wire that throws the solenoid. When I power it, the solenoid clunks and everything behaves as expected.
