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Electric oil pressure gauges Scale Needle Pivot Coils

These need a power supply, normally from the fusebox, which runs through the gauge and back to earth through a sensor unit.

The reading given by the gauge depends on the resistance of the sensor unit; this in turn is determined by the engine's oil pressure. Electric gauges have the advantage of being easy to integrate into a modern dash design.

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How an oil pressure gauge works

The oil pressure gauge is one of the most important instruments in a car. It acts as an indicato...