I went through this with the '50, and finally got it worked out. Problem was
a ground.
Now the gas gauge on the '58 has stopped working. I have a good ground to the
tank and a good ground to the gauge cluster. I have the hot wire to the empty
side, and the sending unit wire to the full side. When I turn on the key, the
gauge jumps straight to the full side, and stays there. Touching a ground
wire to the sending unit terminal at the tank drops the needle down to about
1/4 tank.
Is there another ground that I'm missing? I notice that I get 12 volts to the
empty side of the gauge, and about half that to the full side. Is this a
problem with the gauge?
Thanks!
Smokey
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