broken A body fuel gauge

Check out this website http://www.demonivr.com/
and this old post https://board.moparts.org/ubbthreads/show...e=6#Post4518202

What gauges do you have ralley or standard, i think the voltage reg on the ralley are built into the back of the fuel gauge, you have to remove the gauges and disasemble. standard gauges might just plug in the back

the gauges are standard and the other gauges all work. I have tried running a ground wire all the way to the neg terminal on the battery and still no luck.

I would check to make sure the float is ok, then try
adjusting the float lever and see if that helps. There is an abundance of crap repro senders out there. You could try a different one. It is quite imperative that the ground is good and solid, it makes all the difference in the world.

The sender out of the car should read about 8 ohms to 86 or so as you change the float level. Just use your meter and put one wire on the tube anywhere and the other on the terminal. Just a rheostat.

Finally dropped the tank on mine the other day and found that the float was sticking against the stock and not letting it move. I don't know why I didn't check this before I put it in. I did check that the rheostat was working but didn't pay attention to it slightly snagging at the bottom. Drats!

Now I am waiting on a new tube seal to come since I destroyed the brand new one taking it out.

The other gauges in the aforementioned thread seem to be working correctly now and I have done nothing. I guess it was just 30 years of sitting..

do you have the sending unit itself GROUNDED ???