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right, grounding the sender wire where it plugs into the sender should make the gauge go to max hot... if that checks out, then you may want to look into problems with the dash's printed circuit board, or the gauge itself... swapping in a known working temp gauge would tell you a lot...
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'72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA
72 Stepside Project
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