I totally support tclederman's comments. Get a Runtz reducer. Though I have limited experience in this area I've been able to get both my truck and another old chevy truck gauge up and running where both were thought to be dead. Unless you actually see a broken wire in the back of the fuel gauge or anything else that even a blind man can see, I'd spend the time going over and over your groundings and connections.

At one point, I was getting really fustrated on my truck and said hey maybe it is the sending unit so I thought I'd install my spare unit into the tank. While removing the old unit and having disconnected all wires to the unit, I thought about one last ditch effort by running a new wire from the sending unit directly to the gauge (runtz already installed). I then ran another new wire grounding the collar of the sending unit to the neg terminal of the battery. Then with the sending unit in my lap, I turned the key to on and guess what? I was able to make the gauge move up and down while raising the sending unit's arm. Suspect? Both old grounding wire and hot wire. It took 3 attempts to get clean contacts but it finally came to life.

Can't say this will work for everyone but.....


Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.