Fuel Gauge

Circuit consists of an electromagnetic gauge in instrument panel and a fuel tank sending unit incorporating a float, linkage, movable contact arm and a rheostat. As fuel level lowers, a balanced gauge pointer is moved by the changing resistance in the tank variable rheostat float mechanism. The decreasing resistance to gauge circuit allows gauge pointer to move towards the empty position. With ignition off, gauge pointer may rest anywhere. With ignition on, gauge pointer should indicate the correct fuel level.