Where does the Fuel Gauge sending Unit get it's Ground so that the Fuel Gage Works.

Also if your tank has mounting straps that do not have any insulation between the tank and the strap that will ground the tank.

Adding a dedicated ground from the tank to the body can't hurt.

The full path is:

1. Sender
2. Lock ring
3. Gas tank
4. Strap
5. Body

With the strap at Murray noted:

1. Sender
2. Fuel line on sender
3. Spring steel strap that straddles the rubber hose
4. Fuel line on body
5. Metal clips that mount the fuel line to the body
6. Body