1977 V20 fuel level sensor on tnak not working

[Greyduk]

Bryan I have recently replaced the fuel tank sending unit on a 1987 V20 and a 1994 V21. In each case I replaced them with a Moeller sending unit. You will need to know the depth of the tank to get the correct sensor. One was the 6-12 inch tank depth model and one was the 4-24 inch model. At any rate, there isn't much to it. Only removing and installing 5 small screws. In the case of the V21 the gauge was the culprit as I came to find out. I replaced the gauge any way when I redid the dash. Not too difficult of a job. Good luck.