65 coupe Engine bay gauge feed wiring harness help

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Active Member
Jan 27, 2007
north central Tennessee Valley
That's too big to be a ground. It may be a main power feed that hooks to the battery side of the starter solenoid. Plug it in to the body harness first, then attach a meter lead to it for a continuity check. Then use the other lead and probe around the starter switch and fusebox and see if you get your meter to "chime". Remember to have the battery DISCONNECTED during this test and you can try it with the keyswitch on or off.
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