Chevrolet Corvette C4 (1984-1998) optical sensor low res signal ref low Wiring diagrams

5 VOLT REF 5 VOLT REF PNK IGNITION WIRE A/C CLUTCH STATUS A/C PRESSURE CYCLING SWITCH A/C REQUEST SIG A/T AIR CONDITIONING SYSTEM AIR PUMP RELAY CTRL BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE COIL WIRE CONN 2 COOLING FAN RLY 2&3 COOLING FAN RLY CTRL CRNKSHFT POSIT SIG PCM GROUND CRUISE ACTIVE SIGNAL CRUISE CONTROL MODULE DIST IGNITION FEED DIST REF LOW SIG DISTRIBUTOR (FRONT OF ENGINE, BEHIND ENGINE COOLANT PUMP) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE E.C.M. FUSE 33 EGR SOLENOID CTRL ENG 1 FUSE 30 ENGINE COOLING FAN RLY NO.1 ENGINE COOLING FAN RLY NO.3 ENGINE SPD OUT SIGNAL EVAP VACUUM SW EVAPORATIVE EMISSION (EVAP) VACUUM PURGE SWITCH (RIGHT SIDE OF ENGINE) FUEL INJECTOR #8 PNK WIRE FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 PNK WIRE FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL PUMP RELAY CTRL GRY WIRE HIGH RESOLUTION SIG HOT AT ALL TIMES UNDER- HOOD FUSE BLOCK 1 ECM FUSE 1 HOT IN RUN, BULB TEST OR START HOT IN RUN, BULB TEST, START I/P FUSE BLOCK IGN FEED HI RES SIGNAL IGN FEED REF LO IGN PWR MAF SENSOR OUT IGNITION CTRL INJ 1 CTRL INJ 1 FUSE 22 INJ 2 CTRL INJ 2 FUSE 23 INJ 3 CTRL INJ 4 CTRL INJ 5 CTRL INJ 6 CTRL INJ 7 CTRL INJ 8 CTRL LOW RESOLUTION SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE M/T M/T A/T MAF SENSOR SIG MASS AIR FLOW SENSOR (MAF) (FRONT OF ENGINE, IN AIR INTAKE DUCT) OPTICAL SENSOR LOW RES SIGNAL REF LOW PCM GROUND PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (LEFT REAR OF ENGINE CMPT, ABOVE BATTERY) PPL PPL VSS SIGNAL LOW PPL/WHT WIRE RED WIRE RED/BLK WIRE SENSOR GROUND SPARK PLUGS TACHOMETER, ELECTRONIC BRAKE/ TRACTION CONTROL MODULE TRANS 1-2 SHIFT CTRL TRANS 2-3 SHIFT CTRL TRANS 3-2 SHIFT CTRL VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VSS OUT VSS SIGNAL HIGH CONN 1 WHT WIRE YEL WIRE YEL/BLK WIRE

5 VOLT REF 5 VOLT REF PNK IGNITION WIRE A/C CLUTCH STATUS A/C PRESSURE CYCLING SWITCH A/C REQUEST SIG A/T AIR CONDITIONING SYSTEM AIR PUMP RELAY CTRL BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE COIL WIRE CONN 2 COOLING FAN RLY 2&3 COOLING FAN RLY CTRL CRNKSHFT POSIT SIG PCM GROUND CRUISE ACTIVE SIGNAL CRUISE CONTROL MODULE DIST IGNITION FEED DIST REF LOW SIG DISTRIBUTOR (FRONT OF ENGINE, BEHIND ENGINE COOLANT PUMP) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE E.C.M. FUSE 33 EGR SOLENOID CTRL ENG 1 FUSE 30 ENGINE COOLING FAN RLY NO.1 ENGINE COOLING FAN RLY NO.3 ENGINE SPD OUT SIGNAL EVAP VACUUM SW EVAPORATIVE EMISSION (EVAP) VACUUM PURGE SWITCH (RIGHT SIDE OF ENGINE) FUEL INJECTOR #8 PNK WIRE FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 PNK WIRE FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL PUMP RELAY CTRL GRY WIRE HIGH RESOLUTION SIG HOT AT ALL TIMES UNDER- HOOD FUSE BLOCK 1 ECM FUSE 1 HOT IN RUN, BULB TEST OR START HOT IN RUN, BULB TEST, START I/P FUSE BLOCK IGN FEED HI RES SIGNAL IGN FEED REF LO IGN PWR MAF SENSOR OUT IGNITION CTRL INJ 1 CTRL INJ 1 FUSE 22 INJ 2 CTRL INJ 2 FUSE 23 INJ 3 CTRL INJ 4 CTRL INJ 5 CTRL INJ 6 CTRL INJ 7 CTRL INJ 8 CTRL LOW RESOLUTION SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE M/T M/T A/T MAF SENSOR SIG MASS AIR FLOW SENSOR (MAF) (FRONT OF ENGINE, IN AIR INTAKE DUCT) OPTICAL SENSOR LOW RES SIGNAL REF LOW PCM GROUND PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (LEFT REAR OF ENGINE CMPT, ABOVE BATTERY) PPL PPL VSS SIGNAL LOW PPL/WHT WIRE RED WIRE RED/BLK WIRE SENSOR GROUND SPARK PLUGS TACHOMETER, ELECTRONIC BRAKE/ TRACTION CONTROL MODULE TRANS 1-2 SHIFT CTRL TRANS 2-3 SHIFT CTRL TRANS 3-2 SHIFT CTRL VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VSS OUT VSS SIGNAL HIGH CONN 1 WHT WIRE YEL WIRE YEL/BLK WIRE