Ok, I know this is a old and boring topic, but my gas guage has a mind of its own. First it wouldn't work at all. The truck was converted to twelve volts before I purchased it. I was playing around last night and noticed the voltage reducer was on the negative side, I switched it over to the positive, or "hot".The gas gauge now works, at the "full' reading when the ignition switch is turned to the "on" position. I checked all the wires, all "seem" ok, all connections look good. Is this a grounding issue with the sending unit? What is the proper way to ground the sending unit? Right now it is grounded by a small wire right off of the top and the wire is screwed into the back frame area of the cab. Tonight I can run my ohmmeter on the sending unit. I also ran my test light to the sending unit but it did not register any juice. I also ran the test light underneath the truck and again no juice. PLEASE HELP ME!! Any advice/tips would be greatfull. It has been raining here for 3 days now and this gag gauge deal has been fun but it is also frustrating......


~ Phillip
1949 GMC Suburban - 10 year project
1952 Pontiac Chieftain Convertible straight 8 hydramatic
1945 GMC half ton truck - Driver- Sold 9-15-25
1946 Chevy COE - SOLD 1-5-26 BUH BYE CHEVY!
1959 GMC Half ton long bed NAPCO