BFL13 wrote:
So with the rocker, you can push MOM and now the solenoid closes, then you turn the key to "Start" and instead of the solenoid opening as when powered from the engine battery, it stays closed from being powered by the house battery?
So you should turn off the heater fan etc yourself to reduce the total drain on the house when starting?
Pretty much. Think of it this way - the solenoid has two power sources 1) chassis battery and 2) house battery. The rocker switch connects the house battery to the solenoid and is generally only used when the chassis battery is depleted and can't start the vehicle.
