Does anyone know if the inverter or converter (which ever it is) should allow/direct a charge to coach batteries when Onan generator is running? Coach batteries and engine battery all 3 charge from alternator when motor is running.
If everything is wired up correctly, when you run your generator it is just like being plugged in to shore power. The inverter/convertor should charge the coach batteries. Probably won't charge the chassis battery, though, unless specially wired to do so.