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

[lsrguy2007]

I'm putting in a new fuel tank and fuel gauge sending unit in my 73 Dodge Dart Sport. There's only one lug on the body of the sending unit and I'm thinking that the sending unit needs to pick up a ground somewhere for the gauge to work. Does the fuel tank tied to the chassis provide the ground? Thanks for any help.

 

[Murray]

Maybe your's is missing, but there is a metal strap that clips onto the fuel line nipple at the sender and bridges the flex line and then clips to the metal line again, grounding the fuel line.

 

[Dana67Dart]

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

 

[memike]

Search dodge dart grounding strap, a flexible flat metal with a clamp on each end that snaps on the metal fuel line over your short rubber line

 

[lsrguy2007]

Thanks for the information. I'll take a look.

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

Thanks.

 

[Dana67Dart]

It should look sort of like this when installed

 

[mopowers]

A couple hose clamps and a wire will accomplish the same thing if you're in a hurry for a solution.

 

[67Dart273]

A couple hose clamps and a wire will accomplish the same thing if you're in a hurry for a solution.

THIS!! AS old as these girls are, I would ground the sender DIRECTLY. Solder or clamp a wire, likely easiest near the base of the fuel line nipple, and bolt it to the body. There is no guarantee that the sender has continuity to the tank, that the tank is grounded, or that the fuel line and the OEM clip is grounded.

 

[OttawaCharger]

that's what I did. Small piece of wire and 2 hose clamps.

 

[Dartvader440gt]

I drilled a tiny hole in the side of the lock ring and then ran a wire from there to the chassis.