This way whenever you turn the key ON the gauge receives power and turns on the fuel gauge system.

Pontoon gas tank sending unit. Break it down piece by piece. Has a 30 gallon tank. The Moeller Marine Fuel Gauge Sending Unit is specially designed for your daily purpose and has plenty of most useful features.

My gas cap doesnt have a vented cap it is vented by hose up to side wall of fencing. Electric Sending Unit with Diesel Return Line. Unlike a car marine fuel gauges are notoriously inaccurate.

And come up with the solution. The wire is bad the fuse that its hooked to in the panel is bad. When the tank is low there is high.

The only way water could get into tank is if the fuel sending unit started leaking. There should be access where the fuel lines runs to the engine so follow that hose from the engine back to the tank. It should still have 7 or 8 gallons left in it.

I was hoping there was an entry hole above the sending unit but apparently not or no one is sure. There was a access hole back by the engine. First locate the sending unit in the tank.

I cant see the sending unit but I can feel it. I actually ran out of gas over the weekend and put 10 gallons back in it. These wires consist of the power or 12 volts wire.