Fuel Gauge Problem

Why would you need to remove the sender to measure the resistance? Next time you have it at a know volume (after fill up or down x gals and you will know x after you fill up), check the resistance. I recall the wire goes thru the "body connector" in the left kick panel (by driver's left foot). You can disconnect to measure it there. The wire also goes thru the trunk, but my 65 doesn't have a connector in the trunk. You could cut the wire and install a bullet connector, but best to not molest it. Otherwise, you could remove the circular connector on the dash to access the wire, but I hate working behind the dash. Even if you have to back onto ramps and check right at the sender, that is much easier than removing the sender.