Pontiac GTO IV (2004-2006) 37 21 ref voltage low ref wiring diagram

19 4 AJAR SW SIG AJAR SW SIG 21 48 VSS SIG ENGINE SPD 37 21 REF VOLTAGE LOW REF ABS OFF IND BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRAKE IND BRAKE WARNING IND BRN WIRE BRN/ORG WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRCTL ACTIVE LOW FUEL CRCTL ON DOOR AJAR DOOR AJAR IND DRIVER DOOR LOCK AJAR INDICATOR SWITCH DRL CONTROL DRL IND ECT SENS ENGINE CONTROL MODULE (ECM) ENGINE CONTROLS SYSTEM ENGINE COOLANT ENGINE COOLANT TEMP ENGINE OIL PRESSURE SENSOR (TOP CENTER REAR OF ENGINE) FOG LAMPS FOG LAMPS IND FUEL LEVEL GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HIGH BEAM HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START HOT W/ PARK LAMPS ON HTD REAR WINDOW, HVAC, INSTRUMENTS FUSE IGNITION SWITCH ILLUMINATION (6 BULBS) INSTRUMENT ILLUM FUSE INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL FUSE BLOCK (BELOW LEFT END OF DASH) INSTRUMENTS FUSE L TURN SIG LAMPS FAIL LEFT TURN IND LOW COOLANT LOW REF LT BLU WIRE LT GRN/BLK WIRE MIL CONTROL MIL CTRL MIL IND MULTIFUNCTION DISPLAY TC OFF TC LOW OIL PRESS ORG/ WIRE ORG/YEL WIRE OVER SPEED OIL PRESS OVER TEMP P R N D 3 2 1 PARKING BRAKE SWITCH (IN CENTER CONSOLE) PASSENGER DOOR LOCK AJAR INDICATOR SWITCH PNK/BLU WIRE POWER SHIFT POWERTRAIN CONTROL MODULE (PCM) (LEFT SIDE OF ENGINE COMPT) PPL FUEL LEVEL PPL/WHT WIRE R TURN SIG RED/BLK WIRE RIGHT TURN IND SEAT BELT BUCKLE SWITCH SEAT BELT IND SEAT BELT SW- SECURITY IND SERIAL DATA SET MODE MODE SPEEDOMETER SRS WARNING IND TACHOMETER TEMPERATURE SENSOR (LEFT SIDE OF ENGINE, BELOW GENERATOR) TRIP COMPUTER 000000 TRIP ODOMETER RESET SWITCH WHT WIRE YEL WIRE