12V sending unit ohm reading 83.2 to 297.3. I installed this in a 1955 but found I needed to get a 6v sending unit in order to match OHM's with the gauge. Asking 40.00 also it needs a gasket tore the one taking off the car. I be leave this for a 56 Bird but should be for a 57 also. P.S. my gauge works now.
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