Car used to be owned by a liberal/Democrat?

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I had a stinkin' FORD that I soldered a resistor on the backside of the
cluster so it would stay that way. Otherwise it would jump around and
click against the bottom E. It was the sender.

You may just have a disconnected / broken wire, or short to ground. Just
unplug the sender to confirm, isn't it under the rear seat in that one?

'Curly'

Most of the time , this means you have an open ground

you need to trace back the circuit.  before you do that though, look
under the car and check the tank for dents - if dented, the internal
baffles of the tank could be bent and the float stuck.