Fuel Sending Unit wiring Help

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07-05-2011, 11:12 AM

RestoCreations RestoCreations is offline

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Join Date: May 2010

Location: Birmingham, AL

Cobra Make, Engine: Kirkham 289 FIA, 363 Stroker

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Fuel Sending Unit wiring Help

My fuel sending unit is a newer type that measures electrical resistance, it is not the float type. On the sending unit there are connectors for a POS, NEG, and Sending unit wires. My question is, where does the POS cable connect to.
I have the gauge wired correcdtly with the sending unit wire, a 12 volt supply, and a ground. It reads below zero with just these wires connected, even though there is 4 gallons of gas in the tank. If i connect the POS wire from the fuel sending unit to a 12 volt source, the gauge pegs out past full.
Any help would be most appreciated.

Thanks

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