I do recall that someone had posted about the resistance values on tank sending units. A search has led some interesting reading but not what I need.

84 Runner, carbureted.

Gas gauge was working when I got this thing but the last time I put gas in it(a long time ago)the gauge read nothing.
I did have the tank out to do some welding. I am reasonably sure that the wires where all plugged in but you never know.

Maybe a ground? Any info or a link to the old post(might have been 2 years ago) would be helpful. Thanks