Drawing more than 12 volts off auxiliary battery
I have a 1984 Toyota Sunrader. Under the hood is an auxiliary battery, which charges off the alternator. The auxiliary battery operates my water pump and the furnace.
The furnace requires approximately 13 volts to open the gas valve and spark the ignition. It appears I only get the proper voltage to start the furnace when I turn over the engine.
Any thoughts on how I can draw more power from the auxiliary engine without having the vehicle's engine on? The furnace kicks off if the RV reaches the temperature to which my thermostat is set. If the RV reaches that temperature and the engine isn't running then it doesn't have enough power to reignite the ignition if temperatures drop.
Any insight would be very appreciated.
The furnace requires approximately 13 volts to open the gas valve and spark the ignition. It appears I only get the proper voltage to start the furnace when I turn over the engine.
Any thoughts on how I can draw more power from the auxiliary engine without having the vehicle's engine on? The furnace kicks off if the RV reaches the temperature to which my thermostat is set. If the RV reaches that temperature and the engine isn't running then it doesn't have enough power to reignite the ignition if temperatures drop.
Any insight would be very appreciated.
