Re: Fuel Gauge at Full
From another post of vettevette - "To test the gauge you should first use an ohmmeter and read between the two posts looking for 40 or so ohms. Then run a positive 12 volt wire to the plus side of the gauge and then a ground to the negative side and you should get empty. You have to be sure the gauge body and the cluster are grounded as well. I can't tell from the pictures what is on the circuit board.
Here are the resistance values of the gauges on the 67/72 trucks."
Except I have a 64.
So tomorrow I will try this. and post what ohms I get.
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