Manifold Pressure Indicator

System consists of a pressure switch assembly in engine compartment, an overboost buzzer and a "TURBO" and "ENGINE" light. When manifold vacuum is low, pressure switch turns on "TURBO" light which remains on during turbocharging. At high manifold pressure, "TURBO" light goes off, and warning buzzer comes on, indicating excessive turbocharging. If excessive turbocharging and hot engine oil occur at same time, warning buzzer will buzz, and "ENGINE" light will come on, indicating hot engine oil.