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Go get a couple of inexpensive resistors (33 and 240 ohms, or as close as possible within that range) at Radio Shack and attach each resistor to the gauge terminals. This will at least tell you if the gauge is working properly.
If your test meter is working properly, disconnect the sender from the gauge and measure the sender resistance with the test meter. Good grounds are necessary. Check the accuracy and stability of the test meter by measuring the resistance of the two resistors you got at Radio Shack.
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Warren
'Liberals are maggots upon the life of this planet and need to get off at the next rotation.' (Jamo 2008)
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