follow the gauge wire back to the wiring harness and look for the nearest ground point. Usually a black wire.

Posted by: @wbill2k

↑

the two white ground wires

wow. Who's idea was that.

Anyway, anyway I see a broken one and a scorched one.

Posted by: @wbill2k

↑

if I knew where power came from to the gauge,

see if you can find schematics on charm.li

Well it depends what kind of gas tank you have. If it is a plastic gas tank then the ground wire is on the sending unit, the black wire. You'd have to follow that up where it would be bolted to the frame of the vehicle. So start by accessing the sending unit by taking out the rear seat and taking the excess panel screws out so you can see the top of the fuel sending unit

ok i have a couple pics to show you but I ain't sure how to add them on this post. can I send them to your email or something, please let me know...

       Thanks!

Ok, i think i got this right....

First Pic: https://ibb.co/kg4fQdvS

Second Pic: https://ibb.co/FqVTQWJc

  In the first pic, the red arrows show the two white ground wires coming from the fuel sender in the tank. When i got the car it was like that, the lower white wire just stopped right there and was connected to nothing. the other wire, goes to the left side of the vehicle along the floor then straight back up the side till you see in the second pic it ends up being bolted to the body. I tested that ground with my voltmeter and it didn't seem to have a very good connection, so i cleaned it up some and then put the bolt back. Now that helped a lot, the damn gauge still gives me faulty readings. Sometimes I can accumulate gas while I'm driving! LoL! I was wondering too, if I knew where power came from to the gauge, I could set up a test gauge out of the car and see if I could get that to work right, then maybe I could just run my own wires......

                                                 Bill

Posted by: @wbill2k

↑

Ok, i think i got this right....

Use the links they give you underneath

an image address like this

 https://i.ibb.co/wrsmnLC8/fuelsenderwire2.jpg 

turns into this: