Buick Century VI (1997-2005) headlamp switch Wiring diagrams

AMBIENT LIGHT SENSOR (TOP RIGHT SIDE OF DASH, AT BASE OF WINDSHIELD) B+ B- BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOPLAMP (CHMSL) CORN- ERING LAMP CORNERING LAMP DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRL AMBIENT LIGHT GROUND REF DRL AMBIENT LIGHT SIGNAL FRT PARK LPS FUSE GRN WIRE GRY/BLK WIRE HAZARD HAZARD FUSE HEADLAMP RELAY (BEHIND GLOVE BOX, MOUNTED TO UNDERSIDE OF CROSS-CAR BEAM) HEADLAMP SWITCH HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START I/P FUSE BLOCK I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LEFT LEFT HEAD- LAMP ASSEMBLY LEFT REAR MARKER LAMP LEFT REAR PARK LAMPS LEFT TAIL/ TURN SIGNAL/ STOP- LAMP LEFT TURN INDICATOR LEFT TURN SIGNAL LP PARK FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE LT LT LT PNK WIRE NCA WIRE NORMAL OFF ORG/ WIRE PARK PARK LAMP RELAY (BEHIND RIGHT SIDE OF DASH) PARK/ TURN SIGNAL LAMP PARK/ TURN SIGNAL LAMP SIDE MARKER LAMP PNK WIRE POWER DISTRIBUTION PPL RIGHT RIGHT HEAD LAMP ASSEMBLY RIGHT REAR MARKER LAMP RIGHT REAR PARK LAMPS REAR LICENSE LAMPS RIGHT TAIL/ TURN SIGNAL/ STOP- LAMP RIGHT TURN INDICATOR RIGHT TURN SIGNAL SIDE MARKER LAMP STOP LAMPS FUSE STOPLIGHT SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TAIL LAMPS, LIC LAMPS FUSE TURN SIGNAL TURN SIGNAL/ HAZARD FLASHER MODULE (BELOW LEFT SIDE OF DASH) TURN SIGNAL/MULTIFUNCTION SWITCH) TURN SIGNALS, CORN LPS FUSE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE YEL WIRE YEL/BLK 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

AMBIENT LIGHT SENSOR (TOP RIGHT SIDE OF DASH) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DLC BREAKOUT) FOG LAMP RELAY FOG LAMP SWITCH FOG LP FUSE GRY WIRE HDLP L FUSE HDLP R FUSE HEAD HEADLAMP CNTRL FOG LP CNTRL HEADLAMP SW INPUT HEADLAMP DIMMER SWITCH HEADLAMP RELAY (BEHIND GLOVE BOX) HEADLAMP SWITCH HIGH BEAM HIGH BEAM INDICATOR HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) ILLUM INSTRUMENT PANEL CLUSTER LEFT FOG LAMP LEFT HEADLAMP LIGHT SENSOR SIG LIGHT SENS GRD REF PARK BRK SW IN LOW BEAM LP PARK FUSE LT BLU WIRE LT GRN/BLK WIRE OFF ORG/ WIRE ORG/BLK WIRE PARK PARK BRAKE SWITCH PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL RIGHT FOG LAMP PPL/WHT WIRE RADIO,HVAC,RFA, CLUSTER CEL TEL FUSE RIGHT HEADLAMP TAN WIRE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE YEL WIRE YEL/BLK 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

AJAR UN- LATCHED BCM ACC FUSE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CHIME CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM CRANK SIGNAL, BCM CLSTR FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LOCK DRIVER SEAT BELT SWITCH (PART OF DRIVER'S SEAT BELT ASSEMBLY) GROUND GRY WIRE HEAD OFF PARK HEADLAMP SWITCH HOT AT ALL TIMES HOT IN HOT IN ACC, RUN HOT IN RUN, START HOT IN UNLOCK RUN, START I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH, IN RIGHT DOOR OPENING) IGN O, CLUSTER, PCM, BCM FUSE IGNITION SWITCH KEY-IN IGNITION SWITCH INSTRUMENT PANEL CLUSTER (IPC) LATCHED LEFT TURN LEFT TURN SIGNAL RIGHT TURN SIGNAL IGNITION 1 VOLTAGE LP PARK FUSE 34 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PARK BRAKE SWITCH (ON PARKING BRAKE ASSEMBLY) PCM, BCM U/H RELAY FUSE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RIGHT TURN TAN WIRE TIRE RESET SWITCH (IN I/P FUSE BLOCK) UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT FRONT STRUT TOWER) WHT WIRE YEL WIRE