There is an easy way to check if you wish. Disconnect the sensor wire from your gauge. Hook up a variable resistor (0-100 Ohms or greater). One wire to the sensor input on your gauge, the other to ground. Turn the key on to a position where the gas gauge would normally read. Turn the resistor until the gauge shows empty. Turn everything off, remove the hook up wires and read the resistor with an ohmmeter. You now know what your gas gauge wants.
