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Re: 67-72 Chevy Truck fuel gauge diagnostics 101
it must be a bad gauge. i ran a jumper wire from the brown wire plug ( the one that plugs into the fuse block ) to the signal post on the gauge and the needle came back up to the 3 o'clock position. i noticed when i unplugged the brown wire clip from the fuse block, the needle took a nose dive to the 530 position.
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