Just a ohms meter on the float and use that scale. Use a analouge meter easier to see a dead spot if it has one. If needed and you have the cluster out I have a tester I made to check the guages out of the car, has a internal battery. Hook it up flip a switch and see what it reads. Simple I can lend it to you if needed. Reall a pretty cool tool. Lent it out here a few times. Need to make them and sell them really. Just no time.
