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Thread: 73S - What am I grounding?

  1. 09-13-2023, 05:23 PM #1
    Dave Awesome
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    73S - What am I grounding?

    Anyone know what this (double) wire is grounding? Comes from above the fuel filter on a 73S.
    Any reason not to connect to location shown behind filter?

    Thanks for the help.

    Name: Ground Wire.jpg Views: 329 Size: 68.6 KB
    Dave Reu
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  2. 09-13-2023, 07:58 PM #2
    edmayo
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    Should be the ground for your license lights.
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  3. 09-14-2023, 12:00 PM #3
    Longballa
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    License lights is the single ground. The double ground is coming off of the main harness. Not sure exactly what it grounds at this moment but I'd definitely hook it up.
    72S, 72 3.5L Signal Green, 914-6 GT Signal Green
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  4. 09-14-2023, 01:16 PM #4
    Dave Awesome
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    Thanks both.

    Quote Originally Posted by Longballa View Post
    License lights is the single ground. The double ground is coming off of the main harness. Not sure exactly what it grounds at this moment but I'd definitely hook it up.
    Correct. For what it's worth they are together with these two wires a red w/ black stripe (auxilary starting relay?) and a pink w/ white (speed switch?). Presumably one ground each? Maybe the reason for the occasional back fire under engine braking??

    Name: Speed Switch Cable.jpg Views: 255 Size: 61.1 KB

    Consider it connected.

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  5. 09-14-2023, 03:32 PM #5
    edmayo
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    Rear window defroster. All those ungrounded circuits, sure is a careless mechanic.
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  6. 09-15-2023, 07:13 AM #6
    Dave Awesome
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    Mr. Mayo,

    I couldn't figure why in the world a harness would be coming from a not so ideal location. Duh! The rear window defrost.

    Fantastic! Truly gratefully for yours and every ones help on even the little things like this.
    Dave Reu
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