Printable Version of Topic

Posted by: TINCAN914 Sep 19 2022, 12:30 PM

Need some help. I recently found out the PO put a fuel gauge from what appears to be a 75 and I have a 73. I received a replacement gauge for a 1973, but I would prefer to save time if someone has a diagram or photo on the correct pin placement. I have tried using the search engine, but I can't seem to locate the proper diagram. Can anyone help me out?

Thanks.

Posted by: FlacaProductions Sep 19 2022, 12:38 PM

I don't believe that fuel gauges changed over the years other than early have silver dot centers and late have black dots - if that's what you mean. As to pinout - are you referring to the pins on the top of the sender in the front trunk on top of the fuel tank?

Posted by: TINCAN914 Sep 19 2022, 12:48 PM

Hey Brian,

The back of the gauges that I am finding are different, in the layout, ie bulbs, and terminal placement.
Added photo of new gauge for reference.

I see the ground wire terminal, the +positive terminal, but I'm not sure what wire attaches to the terminal across from the positive, and then the small what appears to be a screw with the nut. Do[attachment=852145]es anything attach to that?


Attached thumbnail(s)

Posted by: sportlicherFahrer Sep 19 2022, 01:18 PM

Red w/ white stripe to +, black to the warning light, green to G. There should be a brown that goes to the ground contact that has multiple wires on one spade. As far as I can recall, nothing goes to the stud.

Posted by: TINCAN914 Sep 19 2022, 01:21 PM

Thanks Jim,,

Posted by: sportlicherFahrer Sep 19 2022, 01:25 PM

Posted by: TINCAN914 Sep 19 2022, 01:44 PM

QUOTE(sportlicherFahrer @ Sep 19 2022, 01:25 PM)

Posted by: sportlicherFahrer Sep 19 2022, 02:03 PM

Warning light is the light socket that is actually on the back of the fuel gauge portion close to the + terminal.

Love PO wiring! After finding over half the under-dash wires in my wife's Fastback were red, I scrapped the whole harness and did a full replacement with original colors. Little easier to come by for those cars...

Posted by: TINCAN914 Sep 19 2022, 02:42 PM

QUOTE(sportlicherFahrer @ Sep 19 2022, 02:03 PM)

Warning light is the light socket that is actually on the back of the fuel gauge portion close to the + terminal.

Love PO wiring! After finding over half the under-dash wires in my wife's Fastback were red, I scrapped the whole harness and did a full replacement with original colors. Little easier to come by for those cars...

Posted by: FlacaProductions Sep 19 2022, 03:43 PM

ahhhh - back of the gauges. gotcha. I have to stop chiming in so early.