Marshall Gas Control Indicator

Most of the RV’s on the road today tell you everything you need to know about liquid, battery, and power levels with the RV’s on-board sensors.  The one thing that is most commonly missing is how much propane you have left in your tanks.   This is an important need to know especially if you’re camping in cold weather.  What would you do if you ran out of propane in the middle of the night and your family had no heat to keep warm?  With this simple solution, you will always know when your primary tank is out of fuel and you are running on your secondary / reserve tank.

My 5^th wheel has (2) 30 lb tanks.  I know exactly when I need to refill the primary tank by an amber light that comes on when I automatically switch over to the second tank.  In order to accomplish this modification your RV needs to be equipped with a Marshall 250 series 2-stage LP regulator or similar model.