I have a different issue with mine. It sounds like Frank's question has been answered so I will ask mine. I converted to 12v but I went ahead and replaced my gauge with a 12v gas gauge. Here is my problem When I have a full tank it buries the needle to the right past the F. After I run the truck enough to get to about 3/4 tank to needle seems to read correctly after that. So between 1/2 and 3/4 tanks is when the needle drops from buried to the right to working correctly. I have never seen the needle actually just drop while driving. It just randomly is working at some point when I start it.

I also have a new 12v sending unit.

Last edited by dgrinnan; 04/21/2022 3:27 PM.

Dave from Northern Kentucky
My 54 3100