 1973 Fuel Gauge Wiring Diagram |
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| TINCAN914 |
 Sep 19 2022, 12:30 PM
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#1
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Summer's Commin...  Group: Members Posts: 2,440 Joined: 18-August 05 From: Colorado Springs, CO. Member No.: 4,611 Region Association: Rocky Mountains  |
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. |
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| FlacaProductions |
Sep 19 2022, 12:38 PM
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#2
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Senior Member Group: Members Posts: 1,550 Joined: 24-November 17 From: LA Member No.: 21,628 Region Association: Southern California 
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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?
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| TINCAN914 |
Sep 19 2022, 12:48 PM
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#3
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Summer's Commin... Group: Members Posts: 2,440 Joined: 18-August 05 From: Colorado Springs, CO. Member No.: 4,611 Region Association: Rocky Mountains |
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) 
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| sportlicherFahrer |
Sep 19 2022, 01:18 PM
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#4
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Nothing to see here. Group: Members Posts: 1,072 Joined: 18-April 05 From: Tacoma, WA Member No.: 3,945 Region Association: Pacific Northwest
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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.
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| TINCAN914 |
Sep 19 2022, 01:21 PM
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#5
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Summer's Commin... Group: Members Posts: 2,440 Joined: 18-August 05 From: Colorado Springs, CO. Member No.: 4,611 Region Association: Rocky Mountains |
Thanks Jim,,
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| sportlicherFahrer |
Sep 19 2022, 01:25 PM
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#6
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Nothing to see here. Group: Members Posts: 1,072 Joined: 18-April 05 From: Tacoma, WA Member No.: 3,945 Region Association: Pacific Northwest
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| TINCAN914 |
Sep 19 2022, 01:44 PM
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#7
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Summer's Commin... Group: Members Posts: 2,440 Joined: 18-August 05 From: Colorado Springs, CO. Member No.: 4,611 Region Association: Rocky Mountains |
QUOTE(sportlicherFahrer @ Sep 19 2022, 01:25 PM)  Red and white to + check Green to G check Brown to Ground check Black not sure which light is the warning light? The PO has a number of extra wires that are as confusing as hell |
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| sportlicherFahrer |
Sep 19 2022, 02:03 PM
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#8
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Nothing to see here. Group: Members Posts: 1,072 Joined: 18-April 05 From: Tacoma, WA Member No.: 3,945 Region Association: Pacific Northwest
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Warning light is the light socket that is actually on the back of the fuel gauge portion close to the + terminal.
Love PO wiring! (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/barf.gif) 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... |
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| TINCAN914 |
Sep 19 2022, 02:42 PM
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#9
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Summer's Commin... Group: Members Posts: 2,440 Joined: 18-August 05 From: Colorado Springs, CO. Member No.: 4,611 Region Association: Rocky Mountains |
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! (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/barf.gif) 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... Thanks again. |
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| FlacaProductions |
Sep 19 2022, 03:43 PM
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#10
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Senior Member Group: Members Posts: 1,550 Joined: 24-November 17 From: LA Member No.: 21,628 Region Association: Southern California
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ahhhh - back of the gauges. gotcha. I have to stop chiming in so early.
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