Buick Century VI (1997-2005) breakout) Wiring diagrams

39 22 27 34 CLUTCH RLY CTRL CLUTCH REQUEST A/C PRESS SIGNAL 5 VOLT REF 58 80 CLASS 2 SER DATA LOW REF A/C CLU DIODE A/C CLUTCH FUSE 23 A/C CLUTCH RELAY 15 A/C COMPRESSOR CLUTCH A/C REFRIGERENT PRESSURE SENSOR (LEFT FRONT STRUT TOWER, ON A/C LIQUID LINE) AUTO A/C MANUAL A/C BLK WIRE BREAKOUT) BRN WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN RUN HVAC CONTROL MODULE I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) HVAC FUSE IGN MAIN RELAY (CLOSED IN RUN OR START) IGNITION BATTERY A/C REQUEST SERIAL DATA GROUND ORG/ WIRE RDO, HVAC, RFA CLSTR, CEL TEL FUSE RED/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT SIDE OF ENGINE COMPT) W/ AUTO A/C W/ MANUAL A/C WHT WIRE

3.8L 3.1L A/C CLU DIODE A/C CLUTCH RELAY 15 A/C COMPRESSOR CLUTCH A/C REFRIGERENT PRESSURE SENSOR (AT LEFT FRONT STRUT TOWER, ON A/C LIQUID LINE) BLK WIRE BREAKOUT) BRN WIRE COOL FAN 1 FUSE COOL FAN 2 FUSE A/C CLUTCH FUSE 23 COOL FAN 1 RELAY COOL FAN 2 RELAY COOL FAN 3 RELAY DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRVR TEMP CTRL ENGINE CONTROLS SYSTEM FAN OFF INPUT A/C REQUEST SIG IGNITION DEFOGGER ON PASS TEMP CTRL GRY WIRE HIGH BLOWER FUSE HIGH BLOWER RELAY HOT AT ALL TIMES HOT IN RUN HVAC CONTROL MODULE HVAC FUSE I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN IGN MAIN RELAY (CLOSED IN RUN OR START) INTERIOR LIGHTS GROUND BATTERY LAMP DIM SIG LEFT COOLING FAN BLOWER MOTOR (BEHIND RIGHT SIDE OF DASH, IN HVAC MODULE) LEFT COOLING FAN DIODE (3.1L) LOW BLOWER FUSE LT BLU WIRE NCA WIRE OFF LO ORG/ WIRE ORG/BLK WIRE POS PPL RDO, HVAC, RFA CLSTR, CEL TEL FUSE RED/BLK WIRE RIGHT AIR TEMPERATURE ACTUATOR (RIGHT SIDE OF HVAC MODULE) RIGHT COOLING FAN DIODE (3.1L) TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT SIDE OF ENGINE COMPT, MOUNTED TO STRUT TOWER) WHT WIRE WHT/BLK WIRE YEL WIRE

A/C CLUTCH FUSE 23 A/C CLUTCH RELAY 15 ABS FUSE 1 ACCESSORY POWER OUTLET AUDIO AMPLIFIER BACK-UP LAMP RELAY (REGAL) BATT 1 FUSE 7 BATT 3 FUSE 3 BATT 2 FUSE 4 BATTERY BCM PWR FUSE BLK WIRE BLOWER MOTOR CONTROL PROCESSOR BLOWER MOTOR RESISTOR ASSEMBLY BODY CONTROL MODULE (BCM) BODY CONTROL MODULE (BCM) OUTSIDE REARVIEW MIRROR SWITCH BREAKOUT) CIGAR LIGHTER CIGAR LTR FUSE COOL FAN 1 FUSE 6 COOL FAN 1 RELAY 12 COOL FAN 2 FUSE 24 COOL FAN 2 RELAY 9 COOL FAN 3 RELAY CRANK FUSE 2 CRANK RELAY 11 DATA LINK CONNECTOR (DLC) DRIVER HEATED SEAT CONTROL MODULE DRIVER SEAT ADJUSTER SWITCH ECM FUSE 22 ELECTRONIC BRAKE CONTROL MODULE (EBCM) F/PMP FUSE 35 F/PMP RELAY 19 F/PMP SPD CONT RELAY 18 FOG LAMP RELAY 17 FOG LP FUSE 31 FROM BATT 2 FUSE 4 (DIAGRAM 1 OF 3) FROM HORN FUSE 27 (DIAGRAM 1 OF 3) FUSE BLOCK- I/P FUSE BLOCK- UNDERHOOD FUSIBLE LINK (10 GA-RUST) GEN FUSE 21 GENERATOR HAZARD FUSE HDLP L FUSE 36 HDLP R FUSE 32 HEADLAMP RELAY HEADLAMP SWITCH PARK LAMP RELAY HIGH BLOWER FUSE HORN FUSE 27 HORN RELAY 16 HVAC CONTROL MODULE RADIO INADV POWER BUS FUSE INSTRUMENT PANEL CLUSTER (IPC) L HEATED SEAT FUSE LEFT HEADLAMP LP PARK FUSE 34 NCA WIRE ORG/ WIRE PARK/ NEUTRAL POSITION SWITCH (CENTURY) PASSENGER FRONT HEATED SEAT CONTROL MODULE PASSENGER FRONT SEAT ADJUSTER SWITCH POWER DROP CONNECTOR POWER MIRRORS FUSE DOOR LOCKS FUSE POWERTRAIN CONTROL MODULE (PCM) R/CMPT REL FUSE 33 RADIO PREM SOUND FUSE RDO,HVAC RFA,CLUSTER DATA LINK FUSE REAR COMPARTMENT LID RELEASE RELAY REAR DEFOG CIRCUIT BREAKER POWER SEAT CIRCUIT BREAKER REAR WINDOW DEFOGGER RELAY RED WIRE REGAL REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RIGHT HEADLAMP STARTER STOP LAMPS FUSE STOPLAMP SWITCH TO HDLP L FUSE 36 (DIAGRAM 1 OF 3) TO HIGH BLOWER FUSE (DIAGRAM 1 OF 3) TO IGN 2 FUSE 8 (DIAGRAM 2 OF 3) TO ONSTAR FUSE, DIAGRAM (2 OF 3) R HEATED SEAT FUSE TO RETAINED ACCESSORY POWER (RAP) RELAY (DIAGRAM 2 OF 3) TURN SIGNAL/ HAZARD FLASHER MODULE

A/T SHIFT LOCK CONTROL SWITCH BCM ACC FUSE BLK WIRE BODY CONTROL MODULE (BCM) BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH) BREAKOUT) BRN (OR DK BLU) WIRE BRN WIRE CRANK SIGNAL BCM, CLUSTER FUSE DK BLU WIRE DK GRN WIRE FROM GEN FUSE 21 (DIAGRAM 1 OF 3) FROM IGNITION SWITCH (DIAGRAM 2 OF 3) FROM INADV POWER BUS FUSE (DIAGRAM 1 OF 3) FROM R HEATED SEAT FUSE DIAGRAM (1 OF 3) FUSE 5 FUSE 8 FUSE BLOCK, UNDER- HOOD FUSE BLOCK- I/P FUSE BLOCK- UNDERHOOD GRY WIRE HEATER- A/C CONTROL CRUISE CONTROL SWITCH CRUISE CONTROL MODULE HVAC CONTROL MODULE RIGHT AIR TEMPERATURE ACTUATOR HVAC FUSE I/P HARN, RIGHT SIDE OF STEERING COLUMN, 13 CM FROM INSTRUMENT CLUSTER BREAKOUT) IGN 0,CLUSTER, PCM, BCM FUSE IGNITION SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL BREAKOUT) INSIDE REARVIEW MIRROR INSTRUMENT PANEL CLUSTER (IPC) BODY CONTROL MODULE (BCM) LEFT AIR TEMPERATURE ACTUATOR LEFT RADIO CONTROL SWITCH LEFT FRONT WINDOW SWITCH SUNROOF MODULE LOCK LOCK OFF LOW BLOWER FUSE CRUISE FUSE NCA WIRE OFF ONSTAR FUSE ORG/ WIRE PARK LOCK FUSE (REGAL) PASSENGER SEAT HEATER SWITCH DRIVER SEAT HEATER SWITCH PNK WIRE POWER DROP CONNECTOR POWER DROP FUSE POWERTRAIN CONTROL MODULE (PCM) PPL PPL PPL PPL/ PPL/ PPL/ PWR WINDOWS PWR SUNROOF CIRCUIT BREAKER RADIO RADIO FUSE RADIO FUSE (W/O RAP) REAR WINDOW DEFOGGER RELAY RED WIRE REGAL RETAINED ACCESSORY POWER (RAP) RELAY RUN WIRE TO CRANK SIGNAL FUSE (DIAGRAM 2 OF 3) TO IGN MAIN RELAY 13 (DIAGRAM 3 OF 3) TO LOW BLOWER FUSE (DIAGRAM 2 OF 3) VACUUM CONTROL ASSEMBLY CRUISE CONTROL RELEASE SWITCH VEHICLE COMMUNI- CATIONS INTERFACE MODULE W/ ELECTRIC O/S MIRRORS W/ FOLD AWAY MIRRORS W/ RAP W/ RAP W/O RAP W/ SUN ROOF W/O RAP WHT WIRE WINDSHIELD WIPER MOTOR WIND- SHIELD WIPER/ WASHER SWITCH WIPER FUSE YEL WIRE