Ok i rewired my boat and everything is working. I was hoping problem was a short in wire for gas gauge but it apparently wasnt. The gauge works fine at full and down to 3/4 of a tank. Once it gets below that it will bounce around and gives a wide arrange of readings. I usually go with the highest it bounces but that isnt very accurate. What could the problem be? Id probably be better off replacing the whole thing, but I dunno how involved that would be. Also my gas tank is under my center console and it would take a lot of work to remove that to be able to get to the tank.