Volkswagen Beetle A4 (1997-2005) nca Wiring diagrams

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COOLANT FAN CONTROL MODULE (LEFT OF RADIATOR) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH, BELOW STEERING COLUMN) FUSE 11 FUSE 13 FUSE 31 FUSE 7 FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 15 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) MULTI-FUNCTION TRANSMISSION RANGE SWITCH (TOP REAR OF TRANSAXLE) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE PARK/ NEUTRAL POSITION RELAY RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SELECTOR LEVEL POSITION P/N WARNING LIGHT SHIFT LOCK SOLENOID SOLENOID VALVES SOLID STATE STARTING/ CHARGING SYSTEM THIRTEEN POSITION AUXILIARY RELAY PANEL (INTEGRAL TO RELAY PANEL) TRANSMISSION CONTROL MODULE (BELOW RIGHT SIDE OF DASH PANEL COVER) TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION VEHICLE SPEED SENSOR (ON TOP OF TRANSAXLE) VALVE BODY VEHICLE SPEED SENSOR VIO/BLK WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

ANTENNA (W/ AMPLIFIER) ANTI-THEFT SYSTEM BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CD CHANGER UNIT (IF EQUIPPED) COMPUTER DATA LINES SYSTEM FUSE 42 FUSE 37 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT W/ KEY IN IGNITION HOT AT ALL TIMES LEFT FRONT TWEETER LEFT FRONT WOOFER LEFT REAR WOOFER NCA WIRE PINS 1-12 (NOT USED) RADIO RED WIRE RED/GRN WIRE RIGHT FRONT TWEETER RIGHT FRONT WOOFER RIGHT REAR WOOFER VIO WIRE WHT WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE DRIVER'S BACKREST HEATING ELEMENT DRIVER'S HEATED SEAT CONTROL MODULE DRIVER'S SEAT HEATING ELEMENT DRIVERS HEATED SEAT TEMPER- ATURE SENSOR FUSE 44 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRY WIRE HOT AT ALL TIMES HOT IN ON OR START NCA WIRE PASSENGER'S BACKREST HEATING ELEMENT PASSENGER'S HEATED SEAT CONTROL MODULE PASSENGER'S SEAT HEATING ELEMENT PASSENGERS HEATED SEAT TEMPER- ATURE SENSOR RED WIRE WHT WIRE YEL WIRE

6 SPEED A/T 6 SPEED A/T 4 SPEED A/T A/C CUT-OUT THERMAL SWITCH (1.8L) DRIVER'S HEATED SEAT CONTROL MODULE ABS CONTROL MODULE AIR BAG CONTROL MODULE ANTI-SLIP CONTROL SWITCH BACK-UP LIGHT SWITCH BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BRAKE LIGHT SWITCH BRAKE SYSTEM VACUUM PUMP (1.8L A/T) TRANSMISSION CONTROL MODULE BRN/RED WIRE CLUTCH PEDAL POSITION SWITCH (M/T) CLUTCH VACUUM VENT VALVE SWITCH (EXCEPT CONVERT- IBLE) COMFORT SYSTEM CENTRAL CONTROL MODULE CRUISE CONTROL SWITCH DATA LINK CONNECTOR DAYTIME RUNNING LIGHTS CHANGE- OVER RELAY DIESEL DIRECT FUEL INJECTION (DFI) ENGINE CONTROL MODULE (ECM) (1.9L) DIGITAL CLOCK FROM THIRTEEN POSITION AUXILIARY RELAY PANEL (DIAGRAM 1 OF 3) FROM THIRTEEN POSITION AUXILIARY RELAY PANEL (SPLICE) (DIAGRAM 1 OF 3) FUEL PUMP RELAY FUSE 10 FUSE 11 FUSE 29 FUSE 31 FUSE 5 FUSE 6 FUSE 7 FUSE 9 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GASOLINE DIESEL GRN WIRE GRY WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR IGNITION SWITCH INSTRUMENT CLUSTER KEY-IN IGNITION SWITCH LOCK LOCK ON MOTRONIC ENGINE CONTROL MODULE (ECM) (1.8L/2.0L) MULTI-FUNCTION TRANSMISSION RANGE SWITCH NCA WIRE PARK/ NEUTRAL POSITION RELAY POWER MIRROR SWITCH REAR SPOILER CONTROL MODULE RADIO RED WIRE RED/BLK WIRE SELECTOR LEVER POSITION WARNING LIGHT (P/N) SHIFT LOCK SOLENOID SPEEDO- METER VEHICLE SPEED SENSOR (6-SPEED A/T) STARTER LOCK RELAY (CLUTCH PEDAL SWITCH) (M/T) STEERING ANGLE SENSOR THIRD SPEED COOLANT FAN CONTROL THERMAL SWITCH THIRTEEN POSITION AUXILIARY RELAY PANEL (BEHIND LEFT SIDE OF DASH) TRANSMISSION CONTROL MODULE VIO WIRE WHT WIRE YEL WIRE

ALARM SYSTEM ANTI- THEFT ENGINE DISABLE FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTRAL LOCKING WARNING LIGHT (SAFE) CENTRAL LOCKING, ANTI-THEFT WARNING SYSTEM ANTENNA CENTRAL LOCKING/ ANTI- THEFT WARNING SYSTEM FUSE CIRCUIT BREAKER COMPUTER DATA LINES SYSTEM CONTROL MODULE DEFOGGERS SYSTEM DRIVER'S SIDE CENTRAL LOCKING UNIT DRIVER'S SIDE DOOR CONTROL MODULE (IN DRIVER'S DOOR, INTEGRAL WITH WINDOW MOTOR) DRIVER'S SIDE INTERIOR LOCK SWITCH FUSE FUSE FUSE FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE GRN WIRE GRN/BRN WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION SWITCH KEY IN IGNITION INSTRUMENT CLUSTER NCA WIRE ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE POWER TOPS SYSTEM POWER WINDOW CIRCUIT BREAKER (IN RELAY PANEL) REAR LID UNLOCKED WARNING LIGHT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE SUPPLEMENTAL RESTRAINTS SYSTEM TRUNK LOCK ALARM/ CENTRAL LOCKING SWITCH VIO WIRE VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

ALARM SYSTEM ANTI- THEFT ENGINE DISABLE FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTRAL LOCKING WARNING LIGHT (SAFE) CENTRAL LOCKING, ANTI-THEFT WARNING SYSTEM ANTENNA CENTRAL LOCKING/ ANTI- THEFT WARNING SYSTEM FUSE CIRCUIT BREAKER COMPUTER DATA LINES SYSTEM CONTROL MODULE DEFOGGERS SYSTEM DRIVER'S SIDE CENTRAL LOCKING UNIT DRIVER'S SIDE DOOR CONTROL MODULE (IN DRIVER'S DOOR, INTEGRAL WITH WINDOW MOTOR) DRIVER'S SIDE INTERIOR LOCK SWITCH FUSE FUSE FUSE FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE GRN WIRE GRN/BRN WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION SWITCH KEY IN IGNITION INSTRUMENT CLUSTER NCA WIRE ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE POWER TOPS SYSTEM POWER WINDOW CIRCUIT BREAKER (IN RELAY PANEL) REAR LID UNLOCKED WARNING LIGHT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE SUPPLEMENTAL RESTRAINTS SYSTEM VIO WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE BRN/BLU WIRE COMFORT SYSTEM CENTRAL CONTROL MODULE COMPUTER DATA LINES SYSTEM DRIVER'S SIDE POWER MIRROR FUSE 38 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE HEATED MIRRORS SWITCH HOT AT ALL TIMES HOT IN ON OR START ILLUMINATION MIRROR ADJUSTMENT SWITCHES MIRROR SELECTOR SWITCH NCA WIRE ORG/BRN WIRE ORG/GRN WIRE PASSENGER'S SIDE DOOR CONTROL MODULE PASSENGER'S SIDE POWER MIRROR POWER MIRROR SWITCH RED WIRE RED/YEL WIRE VIO WIRE WHT WIRE WHT/YEL WIRE WITH WINDOW MOTOR) YEL (OR BLK/BLU) WIRE YEL WIRE

AMPLIFIER ANTENNA (W/ AMPLIFIER) ANTI-THEFT SYSTEM BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CD CHANGER UNIT COMPUTER DATA LINES SYSTEM FUSE 37 FUSE 42 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ KEY IN IGNITION LEFT FRONT BASS SPEAKER RIGHT FRONT SPEAKER LEFT FRONT SPEAKER LEFT FRONT TREBLE SPEAKER LEFT REAR BASS SPEAKER LEFT REAR TREBLE SPEAKER NCA WIRE RADIO RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT BASS SPEAKER RIGHT FRONT TREBLE SPEAKER RIGHT REAR BASS SPEAKER RIGHT REAR TREBLE SPEAKER VIO WIRE WHT WIRE YEL WIRE YEL/RED WIRE

AMPLIFIER ANTENNA (W/ AMPLIFIER) ANTI-THEFT SYSTEM BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE CD CHANGER UNIT COMPUTER DATA LINES SYSTEM FUSE 37 FUSE 42 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ KEY IN IGNITION LEFT FRONT BASS SPEAKER LEFT FRONT MIDRANGE SPEAKER RIGHT FRONT BASS SPEAKER LEFT FRONT TREBLE SPEAKER NCA WIRE RADIO RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT MIDRANGE SPEAKER RIGHT FRONT TREBLE SPEAKER RIGHT REAR SPEAKER LEFT REAR SPEAKER VIO WIRE WHT WIRE YEL WIRE YEL/RED WIRE

AIR BAG CONTROL MODULE (ON CENTER FLOOR TUNNEL, BELOW HEATER CORE HOUSING) AIR BAG MALFUNCTION INDICATOR LAMP (MIL) AIR BAG SPIRAL SPRING/RETURN SPRING W/SLIP RING BLK WIRE BLU WIRE BRN WIRE DRIVER'S SIDE AIR BAG IGNITER DRIVER'S SIDE SIDE AIR BAG CRASH SENSOR (UNDER DRIVER'S SEAT, CARPET) DRIVER'S SIDE SIDE AIR BAG IGNITER (IN DRIVER'S FRONT SEAT BACK) GRN WIRE GRY WIRE GRY/WHT WIRE IGNITION/ STARTER SWITCH INSTRUMENT CLUSTER LEFT FRONT SEAT BELT MICRO SWITCH LEFT SEAT BELT TENSIONER IGNITER LOCK NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE PASSENGER'S SIDE AIR BAG IGNITER 1 PASSENGER'S SIDE SIDE AIR BAG CRASH SENSOR (UNDER PASSENGER'S SEAT, CARPET) PASSENGER'S SIDE SIDE AIR BAG IGNITER (RIGHT SIDE OF FRONT PASSENGER'S SEAT) RED WIRE RIGHT FRONT SEAT BELT MICRO-SWITCH (IN RIGHT FRONT SEAT BELT BUCKLE) RIGHT SEAT BELT TENSIONER IGNITER RUN WIRE SOLID STATE VIO WIRE VIO/WHT WIRE WHT WIRE YEL WIRE