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Electrical Component Locator: Switches

SWITCHES

Component Component Location
A/C Compressor High Pressure Cut-Off Switch On rear of A/C compressor.
A/C Compressor Refrigerant Pressure Switch On A/C accumulator (body builder installed).
Auxiliary Engine Coolant Fan A/C Pressure Switch (Motor Home) In A/C compressor high pressure line (body builder installed). See Figure.
Back-Up Lamps Switch (M/T) On left side of transmission.
Brake Pressure Differential Switch (Commercial Van) Internal to electronic brake control module.
Brake Pressure Differential Switch (Motor Home) Internal to electronic brake control module. See Figure.
Clutch Pedal Position Switch On top of clutch pedal support.
Cold Advance Solenoid Engine Coolant Temperature Switch On rear lower portion of right cylinder head, near exhaust manifold.
Engine Coolant Level Switch (Commercial Van) On left lower end of radiator surge tank.
Engine Coolant Level Switch (Motor Home) On right lower end of radiator surge tank. See Figure.
Evaporative Emissions (EVAP) Canister Purge Vacuum Diagnostic Switch (5.7L VIN R) On right side of engine.
Evaporative Emissions (EVAP) Canister Purge Vacuum Diagnostic Switch (7.4L VIN J) On left side of engine.
Park Brake Actuator Position Switch (Motor Home) In auto apply park brake component box at right frame rail behind transmission. See Figure.
Park Brake Indicator Switch On parking brake lever (body builder installed).
Park Brake Pressure Indicator Switch (Motor Home) In auto apply park brake component box at right frame rail behind transmission. See Figure.
Park Brake Pull Button Switch Mounted to dash.
Park Brake Pump Motor Switch (Motor Home) In auto apply park brake component box at right frame rail behind transmission. See Figure.
Park Brake Switch (W/O Auto Apply) On I/P harness (body builder installed).
Park/Neutral Position (PNP) & Back-Up Lamps Switch On left side, near middle of transmission.
Power Brake Booster Fluid Flow Indicator/Alarm Delay Switch Behind left radiator support (body builder installed).
Power Brake Booster Pump Pressure Switch Behind left radiator support (body builder installed).
Stoplights Switch (Motor Home) At brake pedal support. See Figure.
Torque Converter Clutch (TCC) & Stoplights Switch (Commercial Van) At brake pedal support. See Figure.
Torque Converter Clutch (TCC) & Stoplights Switch (Motor Home) At brake pedal support. See Figure.