Circuit DescriptionThe water-in-fuel sensor is attached to the fuel filter. The engine control module (ECM) provides a 5 volt reference...

Circuit DescriptionThe brake lamp relay is an OEM optional component used to illuminate the vehicle’s brake lamps under conditions when...

Circuit DescriptionThe brake lamp relay is an OEM optional component used to illuminate the vehicle’s brake lamps under conditions when...

Circuit DescriptionAn engine oil pressure switch or oil pressure sensor is used by the engine control module (ECM) to monitor...

Circuit DescriptionThe Engine Control Module (ECM) provides 5 volts to the intake manifold temperature signal circuit, and monitors the change...

Circuit DescriptionThe engine control module (ECM) receives constant voltage from the batteries through the unswitched battery wires that are connected...