1972 chevy c10 temp gauge not working. i replaced sending unit and gauge needle does peg when grounded
Did you put in the correct temp sender, (80 - 120 vs 120 - 220) ? It is not uncommon for even "new" senders to be broken from the factory. I would tell you to verify the temp range required and buy another new unit. Did you recheck the sender wire for any damage or chaffing of the wire covering from sender to gauge ?
Did the auto parts store give you the correct sending unit? The one for the gauge is a variable resistor to ground. The one for the light is an on/off switch. HTH. -Jim
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