Electrical Component Locator: Switches
SWITCHES
| Component | Component Location |
|---|---|
| A/C Compressor High Pressure Cut-Off Switch (4.3L VIN W) | On rear of A/C compressor. See Figure. |
| A/C Compressor High Pressure Cut-Off Switch (5.7L VIN R) | On rear of A/C compressor. See Figure. |
| A/C Compressor High Pressure Cut-Off Switch (6.5L VIN F) | On rear of A/C compressor. |
| A/C Compressor High Pressure Cut-Off Switch (6.5L VIN Y) | On rear of A/C compressor. |
| A/C Compressor High Pressure Cut-Off Switch (7.4L VIN J) | On rear of A/C compressor. See Figure. |
| A/C Compressor Refrigerant Pressure Switch (4.3L VIN W) | On A/C accumulator (body builder installed). See Figure. |
| A/C Compressor Refrigerant Pressure Switch (5.7L VIN R) | On A/C accumulator (body builder installed). See Figure. |
| A/C Compressor Refrigerant Pressure Switch (6.5L VIN F) | On A/C accumulator (body builder installed). |
| A/C Compressor Refrigerant Pressure Switch (6.5L VIN Y) | On A/C accumulator (body builder installed). |
| A/C Compressor Refrigerant Pressure Switch (7.4L VIN J) | On A/C accumulator (body builder installed). See Figure. |
| Auxiliary Engine Coolant Fan A/C Pressure Switch (6.5L VIN F) | In A/C compressor high pressure line (body builder installed). |
| Auxiliary Engine Coolant Fan A/C Pressure Switch (6.5L VIN Y) | In A/C compressor high pressure line (body builder installed). |
| Back-Up Lamps Switch (M/T) | On left side of transmission. |
| Brake Pressure Differential Switch | Internal to electronic brake control module. |
| Clutch Pedal Position Switch | On top of clutch pedal support. |
| Engine Coolant Level Switch (6.5L VIN F) | On left lower end of radiator surge tank. |
| Engine Coolant Level Switch (6.5L VIN Y) | On left lower end of radiator surge tank. |
| Engine Coolant Temperature Fan Control Switch | On lower center left side of engine cylinder head. |
| Evaporative Emissions (EVAP) Canister Purge Vacuum Diagnostic Switch (5.7L VIN R) | On right side of engine. See Figure. |
| Evaporative Emissions (EVAP) Canister Purge Vacuum Diagnostic Switch (7.4L VIN J) | At left center top of engine, behind A/C compressor. See Figure. |
| Fuel Injection Pump Cold Advance Solenoid Engine Coolant Temperature Switch (6.5L VIN F) | On rear of right cylinder head. |
| Fuel Injection Pump Cold Advance Solenoid Engine Coolant Temperature Switch (6.5L VIN Y) | On rear of right cylinder head. |
| Fuel Pump/Engine Oil Pressure Switch (7.4L VIN J) | On top left rear of engine. |
| Glow Plug Control Switch (6.5L VIN F) | On rear of left cylinder head. |
| Glow Plug Control Switch (6.5L VIN Y) | On rear of left cylinder head. |
| Oil Pressure Switch (Diesel) | On top left of cylinder block. |
| P/B Booster Fluid Flow Indicator/Alarm Switch (School Bus) | Brake warning system harness on power steering gear outlet hose fitting. |
| P/B Booster Pump Pressure Switch (School Bus) | Brake warning system harness on brake booster inlet hose fitting near brake master cylinder. |
| Park Brake Indicator Switch | On parking brake lever (body builder installed). |
| Park Brake Pressure Indicator Switch | On right frame rail, behind transmission. |
| Park Brake Pump Motor Switch | On right frame rail, behind transmission. |
| Park/Neutral Position (PNP) & Back-Up Lamps Switch | On left side, near middle of transmission. |
| Stoplamp, A/T, Shift Lock & Cruise Control Switch | At the rear of the brake pedal support. |
| Stoplamps & Torque Converter Brake Switch (Diesel) | At the rear of the brake pedal support. |
| Torque Converter Clutch (TCC) & Stoplamps Switch | On right side of steering column upper support. |