Fuel gauge works intermittently, seems to work after about a half hour of driving, but it still wont read full when I know the tank is full. Tested the wire going to the sending unit in the tank with the key on. It lights the test light intermittently like a turn signal flasher. I noticed on the schematic, the ground on the voltage limiter has a black wire running to what looks like a common ground that is tied into the signal flasher. Is it normal to get this type of intermittent power to the sending unit or is something bleeding through?