Buick Century VI (1997-2005) (below dash, right side of steering column) Wiring diagrams

1442 1442 251 251 BATTERY BATTERY GROUND GROUND ABS FUSE ABS FUSE 1 ANTI-LOCK FAIL IND BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE IND BRAKE PRESSURE MODULATOR VALVE BRN WIRE BRN/WHT WIRE CLUSTER FUSE DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH, RIGHT OF STEERING COLUMN) DELIVERED TORQUE DESIRED TORQUE DK GRN WIRE ELECTRONIC POWER STEERING SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH, IN RIGHT DOOR OPENING) INSTRUMENT PANEL CLUSTER LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR LOW TRAC IND LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE PPL PUMP MOTOR RED WIRE REGAL RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR WHEEL SPEED SENSOR SERIAL DATA SIGNAL SPLICE PACK STOP LAMP SW OUT STOP LAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) STOP LAMPS FUSE STRNG VAR ASSIST MOTOR STRNG VAR ASSIST MOTOR TAN WIRE TAN/BLK WIRE TRAC OFF IND TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) VENT TUBE WHT WIRE YEL WIRE

BCM GND BCM PWR FUSE BLK WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLUSTER FUSE CRANK RELAY II CRANK SIGNAL BCM, CLUSTER FUSE CRANK VOLTAGE PPL DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH, RIGHT OF STEERING COLUMN) DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN HOT IN OFF, RUN OR START HOT IN RUN OR START HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK IGN IGN 0: CLUSTER PCM, BCM FUSE IGN KEY RESISTOR PELLET IGN KEY SIG IGN REF LO IGNITION SWITCH INSTRUMENT PANEL CLUSTER KEY IN KEY OUT KEY-IN SIG LT GRN WIRE ORG/ WIRE PASS-KEY ENABLE SWITCH PCM BCM IGN RELAY FUSE PNK WIRE PPL PPL IGN (0) PPL/WHT WIRE SECURITY INDICATOR SERIAL DATA STARTER RLY CTRL STARTER SOLENOID TAN WIRE UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) DATA CLSS 2 DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH, RIGHT OF STEERING COLUMN) DK BLU WIRE DK GRN WIRE E, C SER DATA GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH, IN RIGHT DOOR OPENING) INSTRUMENT PANEL CLUSTER LT BLU WIRE LT GRN WIRE ORG/ WIRE PPL RADIO RADIO, HVAC, RFA, CLUSTER, DATA LINK FUSE SPLICE VEHICLE COMMUNICATIONS INTERFACE MODULE (ON REAR OF LEFT REAR WHEELHOUSE) WHT WIRE

3 CM FROM AUDIO AMPLIFIER (W/ AMP) AUTOMATIC HEADLAMP RELAY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BRAKE FLUID LEVEL SWITCH CENTER HIGH MOUNTED STOP LAMPS CRUISE CONTROL MODULE DRIVER INFORMATION DISPLAY SWITCH (REGAL) DATA LINK CONNECTOR (DLC) DRIVER SEAT HEATER CONTROL MODULE DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT HEATER SWITCH PASSENGER SEAT HEATER SWITCH DRIVER WINDOW MASTER SWITCH DRIVER'S HEATED SEAT BACK ELEMENT DRIVER'S HEATED SEAT THERMISTER DRIVER SEAT BELT SWITCH EXC ONSTAR EXC ONSTAR ONSTAR FOG LAMP SWITCH (REGAL) GROUND (ON STEERING COLUMN) HEADLAMP DIMMER SWITCH HEADLAMP SWITCH IGNITION KEY ALARM SWITCH INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT DOOR LOCK LEFT FRONT DOOR LOCK SWITCH LEFT REAR DOOR LOCK (AJAR INDICATOR SWITCH) LEFT REAR PARK LAMP LEFT REAR PARK LAMP LEFT LICENSE LAMP LEFT ROOF RAIL COURTESY/ READING LAMP NCA WIRE ONSTAR OUTSIDE REMOTE CONTROL REARVIEW MIRROR SWITCH PASSENGER SEAT HEATER CONTROL MODULE PASSENGER'S HEATED SEAT BACK ELEMENT PASSENGER'S HEATED SEAT THERMISTOR PASSENGER SEAT ADJUSTER SWITCH RADIO RADIO ANTENNA MODULE REAR COMPARTMENT LID AJAR SWITCH REAR COMPARTMENT LID LOCK RELEASE ACTUATOR REAR COMPARTMENT LID RELEASE SWITCH REAR WDO ANTENNA FIXED ANTENNA REMOTE CONTROL DOOR LOCK RECEIVER RIGHT BACK-UP LAMP RIGHT LICENSE LAMP LEFT BACK-UP LAMP RIGHT FRONT DOOR LOCK (AJAR INDICATOR SWITCH) RIGHT FRONT DOOR LOCK SWITCH RIGHT FRONT WINDOW SWITCH RIGHT REAR DOOR LOCK (AJAR INDICATOR SWITCH) RIGHT REAR PARK LAMP RIGHT REAR PARK LAMP RIGHT ROOF RAIL COURTESY/ READING LAMP LEFT VANITY MIRROR LAMP RIGHT TAIL/ STOP/TURN SIGNAL LAMP RIGHT REAR SIDE MARKER LAMP FUEL PUMP RIGHT VANITY MIRROR LAMP INSIDE REARVIEW MIRROR SUNROOF MODULE TAN WIRE TIRE RESET SWITCH TRACTION CONTROL SWITCH (REGAL) INSTRUMENT PANEL CLUSTER (IPC) TURN SIGNAL/ HAZARD FLASHER MODULE VEHICLE COMMUNICATIONS INTERFACE MODULE W/ HEATED SEATS (PASS SEAT HARN, 20 CM FROM W/O HEATED SEATS WHT WIRE WIND- SHIELD WIPER MOTOR

BLK WIRE BODY CONTROL MODULE (LEFT OF STEERING COLUMN) HORN OUTPUT DK GRN WIRE HIGH NOTE HORN HORN FUSE HORN RELAY HORN SWITCH HORNS (BEHIND RIGHT FRONT FASCIA) HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE LOW NOTE HORN SLIP RING SPRING STEERING COLUMN) UNDERHOOD ACCESSORY WIRING JUNCTION BLOCK (MOUNTED ON RIGHT STRUT TOWER)

1550 209 1036 PPL 1816 39 PNK WIRE 55 58 SPEED SENSOR SRL DATA 8 1500 893 PPL PNK WIRE AIR BAG IND ANTILOCK IND BCM BCM OR IPC SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE IND BRN/WHT WIRE CHANGE OIL IND. CHARGE IND CLUSTER FUSE CLUSTER LOGIC COOLANT TEMP IND CRANK SIGNAL BCM, CLUSTER FUSE CRUISE CONTROL SYSTEM CRUISE IND DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH, RIGHT OF STEERING COLUMN) DK BLU WIRE DK BLU/WHT (OR BLU) WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR/TRUNK AJAR IND DRIVER INFORMATION DISPLAY SWITCH E/M EBCM ENGINE CONTROLS SYSTEM GROUND GRY WIRE HEADLIGHTS SYSTEM HIGH BEAM IND HOT AT ALL TIMES HOT IN HOT IN OFF, RUN OR START HOT IN RUN, BULB TEST OR START HVAC CONTROL MODULE I/P FUSE BLOCK IGN 01, BCM, PCM, CLUSTER FUSE IGNITION VOLTAGE ILLUMINATION (5 BULBS) INSTRUMENT CLUSTER LEFT TURN IND LOW COOLANT IND LOW FUEL IND LOW OIL IND LOW OIL PRESSURE IND LOW TIRE IND LOW TRAC IND LOW WASHER IND LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MODE PNK WIRE ORG/ WIRE PCM PCM CLASS 2 SERIAL DATA PCM, ABS BCM, CLUSTER LOGIC SERIAL DATA PERF SHIFT IND PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT SIDE OF ENGINE COMPT, IN AIR CLEANER ASSY) PPL RADIO, HVAC, RFA, CLUSTER, CEL TEL FUSE RESET+ RIGHT TURN IND RIGHT TURN SIGNAL GND SEAT BELT IND SECURITY IND SERIAL DATA SERVICE VEHICLE SOON IND SPEEDO- METER GAUGE TACHO- METER GAUGE SPLICE PACK SRL DATA TRAC OFF IND TRIP RESET INPUT TRIP RESET SWITCH VEHICLE SPEED LEFT TURN SIGNAL GND VF DISPLAY WHT WIRE YEL WIRE

2002 REGAL /CENTURY, 2003 REGAL ONLY ASHTRAY LAMP (CENTURY) BLK WIRE BLU WIRE BRN WIRE DOME DRIVER DOOR LOCK SWITCH DRIVER MASTER WINDOW SWITCH DRIVER SEAT HEATER SWITCH ELECTRONIC TRACTION CONTROL SWITCH (REGAL) FOG LAMP SWITCH FRONT PASSENGER WINDOW SWITCH FRONT PASSENGER DOOR LOCK SWITCH GRD GRY WIRE HEAD OFF PARK HEADLAMP SWITCH HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK I/P FUSE BLOCK STRG WHL CONT FUSE ILLUM INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT CLUSTER VF DIM DIS SIG LP PARK FUSE LT BLU WIRE OFF ORG/ WIRE OUTSIDE REAR VIEW MIRROR SWITCH PANEL DIMMING FUSE PASSENGER SEAT HEATER SWITCH PRNDL LAMP (REGAL) RADIO CONTROL SWITCHES RADIO VF DIM DIS SIG RED WIRE TAIL, LIC LAMPS FUSE UNDERHOOD FUSE BLOCK VF DIM SIG W/ HEATED SEATS W/O HEATED SEATS WHT WIRE YEL WIRE

AM/FM ANT IN AUDIO AMPLIFIER (BELOW REAR SPEAKER SHELF, IN TRUNK) BARE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE E, C DATA FRONT WINDOW ANTENNA GRID GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR RUN I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH, IN RIGHT DOOR OPENING) INFLATABLE RESTRAINT STEERING WHEEL CONTROL MODULE LEFT FRONT MIDRANGE SPEAKER LEFT FRONT TWEETER SPEAKER LEFT RADIO CONTROL SWITCHES LEFT REAR SPEAKER LF AUDIO RF AUDIO LF AUDIO RR AUDIO RR AUDIO LR AUDIO LR AUDIO GROUND GROUND LF SPKR LF SPKR RR SPKR RR SPKR LT BLU WIRE LT BLU/BLK WIRE LT GRN (OR BLK/WHT) WIRE LT GRN WIRE LT GRN/BLK WIRE LT LT MID-RANGE MUTE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL RADIO RADIO ANTENNA MODULE (ON REAR WINDOW HEADER PANEL) RADIO FUSE RADIO PREM FUSE RADIO, HVAC, RFA, CEL TEL, CLUSTER FUSE REAR WINDOW ANTENNA GRID RED WIRE RIGHT FRONT MIDRANGE SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT RADIO CONTROL SWITCHES RIGHT REAR SPEAKER RR RTN RR FEED LR FEED LR RTN SCAN SEEK DN SEEK UP SOURCE STRG CTRL SUB RTN SUB RTN SUB-WOOFER TAN WIRE USED) (NOT VEHICLE INTERFACE UNIT (VIU) (IN REAR COMPT, MOUNTED TO LEFT REAR WHEELHOUSE) VOL DN VOL UP W/ ADAPTIVE RECEPTION SYSTEM W/O ADAPTIVE RECEPTION SYSTEM WHT WIRE YEL WIRE

AM/FM ANT IN ARS BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE E, C DATA FRONT WINDOW ANTENNA GRID GRY WIRE HOT AT ALL TIMES HOT IN ACC OR RUN I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH, IN RIGHT DOOR OPENING) INFLATABLE RESTRAINT STEERING WHEEL CONTROL MODULE LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER LEFT RADIO CONTROL SWITCHES LEFT REAR SPEAKER LF SPKR LF SPKR RR SPKR RR SPKR LR SPKR LR SPKR RF SPKR RF SPKR GROUND BATTERY RAP PWR RADIO PWR ILLUM FUSE OUT LT BLU WIRE LT GRN (OR BLK/WHT) WIRE LT GRN WIRE MUTE NCA WIRE NOT USED ORG/ WIRE RADIO RADIO ANTENNA MODULE (ON REAR WINDOW HEADER PANEL) RADIO FUSE RADIO, HVAC, RFA, CEL TEL, CLUSTER FUSE REAR WINDOW ANTENNA GRID RED WIRE RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER RIGHT RADIO CONTROL SWITCHES RIGHT REAR SPEAKER SCAN SEEK DN SEEK UP SOURCE STRG CTRL TAN WIRE VOL DN VOL UP W/ ADAPTIVE RECEPTION SYSTEM W/O ADAPTIVE RECEPTION SYSTEM WHT WIRE YEL WIRE

A/T SHIFT LOCK CONTROL SOLENOID AUTOMATIC TRANSMISSION BLK WIRE BRAKE TO SHIFT RELAY (LEFT OF I/P FUSE BLOCK) BTSI PARK LOCK FUSE COMPUTER DATA LINES SYSTEM DATA LINE DK GRN WIRE GRN WIRE GRY WIRE HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK (RIGHT SIDE OF DASH, IN RIGHT DOOR OPENING) ORG/ WIRE PNK WIRE RED WIRE SIG A SIG B SIG P SIG C STOPLAMP SWITCH (OPEN WHEN BRAKE PEDAL DEPRESSED) (ON BRAKE PEDAL SUPPORT) TAN WIRE TRANSMISSION INTERNAL MODE SWITCH WHT WIRE YEL WIRE