BMW 3 series F30/F31 (2011-2015) front electronic module Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PWR SPLY AIR CONDITIONING CONTROL PANEL AIR DISTRIBUTION MICRO SWITCH (BASIC) (CENTER OF DASH) AUDIO CONTROL PANEL BASIC BLK WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM ENGINE COMPT) EVAPORATOR TEMP SNSR FOOTWELL TEMP SNSR SIG GND FRONT CENTER VENTILATION GRILLE FRONT ELECTRONIC MODULE FUSE 10 GND K-CAN BUS SIG K-CAN BUS SIG GRILLE GRN WIRE GRY/GRN WIRE GRY/RED WIRE HEATING/AIR CONDITIONING SYSTEM (CENTER OF DASH, ABOVE RADIO) HOT AT ALL TIMES LEFT FOOTWELL EVAPORATOR TEMPERATURE TEMPERATURE SENSOR SENSOR (CENTER OF DASH) LEFT FRONT VENTILATION TEMPERATURE SENSOR LIN BUS SIG LOCATOR LIGHTING ORG/GRN WIRE PWR SPLY REAR COMPARTMENT VENTILATION RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE REFRIGERANT PRESSURE SENSOR (RIGHT FRONT OF RH FOOTWELL TEMP SNSR RH FR VENTILATION TEMP SNSR RIGHT FOOTWELL TEMPERATURE SENSOR RIGHT FRONT VENTILATION TEMPERATURE SENSOR SENS SIG SPLY SENS GND MIXING SIR CNTR SIG EVAPORATOR TEMP SNSR SIG VIO WIRE VIO/GRN WIRE VOL SPLY LIN BUS SIG GND W/ NAVIGATION W/O NAVIGATION WHT/BLU WIRE WHT/BRN WIRE YEL WIRE YEL/BRN WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PWR SPLY AIR CONDITIONING CONTROL PANEL AIR DISTRIBUTION MICRO SWITCH (BASIC) (CENTER OF DASH) AUDIO CONTROL PANEL BASIC BLK WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM ENGINE COMPT) EVAPORATOR TEMP SNSR FOOTWELL TEMP SNSR SIG GND FRONT CENTER VENTILATION GRILLE FRONT ELECTRONIC MODULE FUSE 10 GND K-CAN BUS SIG K-CAN BUS SIG GRILLE GRN WIRE GRY/GRN WIRE GRY/RED WIRE HEATING/AIR CONDITIONING SYSTEM (CENTER OF DASH, ABOVE RADIO) HOT AT ALL TIMES LEFT FOOTWELL EVAPORATOR TEMPERATURE TEMPERATURE SENSOR SENSOR (CENTER OF DASH) LEFT FRONT VENTILATION TEMPERATURE SENSOR LIN BUS SIG LOCATOR LIGHTING ORG/GRN WIRE PWR SPLY REAR COMPARTMENT VENTILATION RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE REFRIGERANT PRESSURE SENSOR (RIGHT FRONT OF RH FOOTWELL TEMP SNSR RH FR VENTILATION TEMP SNSR RIGHT FOOTWELL TEMPERATURE SENSOR RIGHT FRONT VENTILATION TEMPERATURE SENSOR SENS SIG SPLY SENS GND MIXING SIR CNTR SIG EVAPORATOR TEMP SNSR SIG VIO WIRE VIO/GRN WIRE VOL SPLY LIN BUS SIG GND W/ NAVIGATION W/O NAVIGATION WHT/BLU WIRE WHT/BRN WIRE YEL WIRE YEL/BRN WIRE

2.0L TWIN TURBO 3.0L TWIN TURBO AUTOMATIC LUGGAGE COMPARTMENT LID ACTUATION AUTOMATIC LUGGAGE COMPARTMENT LID ACTUATION AUC REARVIEW SENSOR MIRROR AUXILIARY BRAKE LIGHT BASIC VERSION BLOWER OUTPUT STAGE BRAKE FLUID LEVEL SWITCH BRAKE LIGHT TOUCH BRN WIRE BRN/BLK WIRE CONNECTION CONNECTION 2 CONNECTION 3 CONTROLLER COOLANT LEVEL SENSOR DIAGNOSIS PLUG ELECTRO- CHROMIC INTERIOR FRONT CIGARETTE LIGHTER FRONT ELECTRONIC MODULE FRONT PASSENGER EXTERIOR MIRROR FUEL PUMP ELECTRIC CONTROL FUEL (EKPS) PUMP LANE CHANGE WARNING HIGH VARIANT ROOF FUNCTIONS MODULE HIGH VERSION IGNITION COIL IGNITION CYLINDER 1 COIL CYLINDER 2 LEFT REAR FOOTWELL LIGHT LEFT REAR SEAT HEATING SWITCH NCA WIRE NOISE SUPPRESSOR FILTER PARKING ASSISTANT PASSENGER ELECTRONIC OUTER DOOR HANDLE MODULE PASSENGER SEAT-HEATING MODULE PASSENGER'S DOOR ENTRANCE LIGHT PASSENGER'S DOOR POWER WINDOW SWITCH PASSENGER'S DOOR TRIM FRONT PANEL PASSENGER DOOR LOCK LIGHTING PASSENGER'S PASSENGER'S DOOR INNER DOOR DOOR HANDLE ENTRANCE LIGHTING LIGHT RADIO PREPARATION CHARGING HOLDER RAIN/LIGHTS/ CONDENSATION/ SOLAR SENSOR HIGH VARIANT ROOF FUNCTIONS MODULE REAR DRIVER'S SIDE SEAT HEATING MODULE REAR PASSENGER'S SIDE SEAT HEATING MODULE REAR RIGHT SEAT HEATING SWITCH REMOTE CONTROL RECEIVER RIGHT FRONT FOOTWELL LIGHT RIGHT REAR FOOTWELL LIGHT RIGHT REVERSIBLE ELECTROMOTIVE ELECTRICALLY MOTORIZED REEL ROTOR POSITION SENSOR TELEMATIC COMMUNICATION BOX

2.0L TWIN TURBO 3.0L TWIN TURBO AUTOMATIC LUGGAGE COMPARTMENT LID ACTUATION AUTOMATIC LUGGAGE COMPARTMENT LID ACTUATION AUC REARVIEW SENSOR MIRROR AUXILIARY BRAKE LIGHT BASIC VERSION BLOWER OUTPUT STAGE BRAKE FLUID LEVEL SWITCH BRAKE LIGHT TOUCH BRN WIRE BRN/BLK WIRE CONNECTION CONNECTION 2 CONNECTION 3 CONTROLLER COOLANT LEVEL SENSOR DIAGNOSIS PLUG ELECTRO- CHROMIC INTERIOR FRONT CIGARETTE LIGHTER FRONT ELECTRONIC MODULE FRONT PASSENGER EXTERIOR MIRROR FUEL PUMP ELECTRIC CONTROL FUEL (EKPS) PUMP LANE CHANGE WARNING HIGH VARIANT ROOF FUNCTIONS MODULE HIGH VERSION IGNITION COIL IGNITION CYLINDER 1 COIL CYLINDER 2 LEFT REAR FOOTWELL LIGHT LEFT REAR SEAT HEATING SWITCH NCA WIRE NOISE SUPPRESSOR FILTER PARKING ASSISTANT PASSENGER ELECTRONIC OUTER DOOR HANDLE MODULE PASSENGER SEAT-HEATING MODULE PASSENGER'S DOOR ENTRANCE LIGHT PASSENGER'S DOOR POWER WINDOW SWITCH PASSENGER'S DOOR TRIM FRONT PANEL PASSENGER DOOR LOCK LIGHTING PASSENGER'S PASSENGER'S DOOR INNER DOOR DOOR HANDLE ENTRANCE LIGHTING LIGHT RADIO PREPARATION CHARGING HOLDER RAIN/LIGHTS/ CONDENSATION/ SOLAR SENSOR HIGH VARIANT ROOF FUNCTIONS MODULE REAR DRIVER'S SIDE SEAT HEATING MODULE REAR PASSENGER'S SIDE SEAT HEATING MODULE REAR RIGHT SEAT HEATING SWITCH REMOTE CONTROL RECEIVER RIGHT FRONT FOOTWELL LIGHT RIGHT REAR FOOTWELL LIGHT RIGHT REVERSIBLE ELECTROMOTIVE ELECTRICALLY MOTORIZED REEL ROTOR POSITION SENSOR TELEMATIC COMMUNICATION BOX

1 1 3.0L TURBO, 3.0L TWIN TURBO 2.0L TURBO 2.0L TURBO 3.0L TURBO HYBRID 3.0L TURBO, 3.0L TWIN TURBO ACTIVE CRUISE CONTROL AUC SENSOR AUXILIARY WATER PUMP (HYBRID) ELECTRIC COOLANT PUMP 2 (EXCEPT HYBRID) BLK WIRE BRN WIRE BRN/BLK WIRE CAMERA ELECTRO- BASED CHROMIC DRIVER INTERIOR ASSISTANCE REARVIEW SYSTEMS MIRROR DME MAIN RELAY DRIVER'S LUMBER SUPPORT SWITCH DYNAMIC STABILITY CONTROL (DSC) ELECTRIC COOLANT PUMP ELECTRIC LEFT REAR FAN VANITY CUT OUT MIRROR RELAY LIGHT ELECTRIC MACHINE ELECTR- ONICS (HYBRID) ELECTRIC MACHINE- ELECTRONICS (HYBRID) ELECTRO- MECHANICAL POWER STEERING ELECTRONIC TRANSMISSION CONTROL ENVIRONMENTAL AIR CATALYST SENSOR (2.0L TURBO) FROM FUSE 68 (DIAGRAM 1 OF 4) FUSE FROM TERMINAL FROM TRANSFER TERMINAL POINT (DIAGRAM 1 OF 4) FRONT FRONT ELECTRONIC MODULE FRONT ELECTRONIC MODULE (RIGHT END OF DASH) FRONT PASSENGER'S SEAT BACKREST FRONT POWER DISTRIBUTION BOX (RIGHT REAR OF ENGINE COMPT) FRONT REFRIGERANT SHUT-OFF VALVE (HYBRID) FUSE FUSE 29 FUSE 33 FUSE 36 FUSE 37 FUSE 41 FUSE 47 FUSE 55 FUSE 56 FUSE 63 FUSE FUSE GRN WIRE GRN/BLU WIRE GRY WIRE HIGH VARIANT ROOF FUNCTIONS MODULE IGNITION, FUEL INJECTION RELAY PASSENGER'S LUMBER SUPPORT VALVE BLOCK POWER DISTRIB- UTION BOX RAIN/ RIGHT DRIVING LIGHTS REAR CONDENSATION/ VANITY SOLAR MIRROR SENSOR LIGHT REAR REAR DRIVER'S PASSENGER'S SIDE SEAT SIDE SEAT HEATING HEATING SWITCH SWITCH RED WIRE RED/WHT WIRE RED/YEL WIRE RELAY RIGHT FRONT LEFT FRONT VANITY VANITY MIRROR MIRROR LIGHT LIGHT START-STOP BUTTON STARTER MOTOR GENERATOR STEERING COLUMN CLUSTER SWITCH TRANSFER BOX VALVETRONIC RELAY VEHICLE SOUND GENERATOR VIO WIRE W/O AUTOMATIC ENGINE START-STOP FUNCTION WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIDTH ADJUSTMENT SWITCH YEL WIRE

12 V CONNE- CTION 1 ACTIVE FUEL TANK TANK SOUND TANK LOCKING DESIGN LOCKING VALVE VALVE AUTOMATIC LUGGAGE COMPARTMENT LID ACTUATION AUXILIARY CONTROL UNIT BASE PLATE COMBOX BLK WIRE BLU WIRE BOOT LID/ TAILGATE LOCK BRN WIRE CUT-OFF RELAY DVD CHANGER ELECTRONIC DAMPER CONTROL FROM DC/DC CONVERTER (DIAGRAM 4 OF 4) FROM FUSE BOX (DIAGRAM 1 OF 4) FRONT ELECTRONIC MODULE FUEL PUMP CONTROL (EKPS) FUSE FUSE 107 FUSE 109 FUSE 123 FUSE 135 FUSE 147 FUSE 148 FUSE 154 FUSE 163 FUSE 164 FUSE 165 FUSE FUSE FUSE FUSE FUSE GRN WIRE GRY WIRE INFOTAIN- HIFI MENT AMPLIFIER FAN W/O TRAILER MODULE LANE ALL ROUND DEPARTURE VISION WARNING CAMERA LUGGAGE COMPARTMENT LIGHT NCA WIRE REAR FULLY DRIVER'S AUTOMATIC SIDE SEAT TOWING HEATING HITCH MODULE REAR PASSENGER'S SIDE SEAT HEATING MODULE RED WIRE RED/BRN WIRE SAFETY BATTERY TERMINAL GENERATOR SIREN W/ TILT ALARM SENSOR TERMINAL TIRE PRESSURE CONTROL TO BISTABLE RELAY (DIAGRAM 4 OF 4) FUSE TO DC/DC CONVERTER (DIAGRAM 4 OF 4) TO REAR ELECTRONIC MODULE (DIAGRAM ELECTRONIC 4 OF 4) DAMPER CONTROL TOP HIFI AMPLIFIER TOP HIFI AUTOMATIC AMPLIFIER LUGGAGE COMPARTMENT LID ACTUATION TRAILER SOCKET (IF EQUIPPED) VIDEO MODULE VIO WIRE WHT WIRE YEL WIRE

3.0L TURBO, 3.0L TWIN TURBO 2.0L TURBO ACCUMULATOR MANAGEMENT ELECTRONICS (HYBRID) AUXILIARY BATTERY (HYBRID) BISTABLE RELAY BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMBOX TELEMATIC COMMUNICATION BOX CONTACT FREE TAILGATE OPENING EVALUATION ELECTRONICS CUT-OFF RELAY DC/DC CONVERTER DIAGNOSIS PLUG DIGITAL FRONT MOTOR ELECTRONIC ELECTRONICS MODULE DRIVER ASSISTANCE SYSTEMS OPERATING UNIT DRIVER ELECTRONIC OUTER DOOR HANDLE MODULE ELECTRIC MACHINE- ELECTRONICS (HYBRID) FROM FRONT POWER DISTRIBUTION BOX (DIAGRAM 1 OF 4) FROM FUSE 160 (DIAGRAM 3 OF 4) FROM FUSE BOX (DIAGRAM 1 OF 4) FROM REAR FUSE HOLDER (DIAGRAM 3 OF 4) FRONT ELECTRONIC MODULE FRONT ELECTRONIC MODULE (RIGHT END OF DASH) FUSE FUSE 10 FUSE 114 FUSE 113 FUSE 120 FUSE 149 FUSE 150 FUSE BOX 2 FUSE 600 FUSE FUSE FUSE GRN WIRE GRN/WHT WIRE GRY WIRE HEATING/ AIR CONDITIONING SYSTEM HORN RELAY INTELLIGENT BATTERY LEFT HEADLIGHT NATURAL VACUUM LEAK DETECTION TEMPERATURE SENSOR, PRESSURE SWITCH NCA WIRE PASSENGER ELECTRONIC OUTER DOOR HANDLE MODULE REAR ELECTRONIC MODULE REAR ELECTRONIC MODULE (RIGHT FUSE REAR OF LUGGAGE COMPT) REAR FUSE HOLDER (RIGHT SIDE OF REAR COMPT) REAR WINDOW DEFOGGER RELAY RED WIRE RED/BRN WIRE SENSOR 2 SOLID STATE STARTER MOTOR GENERATOR STEERING LIGHT COLUMN SWITCH SWITCH UNIT CLUSTER TERMINAL SOLID STATE TO REAR FUSE HOLDER (DIAGRAM 3 OF 4) TRAILER MODULE TRAILER SOCKET TRANSFER TERMINAL POINT 3 VIO WIRE W/ TELEMATIC W/ COMMUNICATION COMBOX BOX W/ W/O TRAILER TRAILER MODULE MODULE WHT WIRE WHT/BLU WIRE YEL WIRE

1 1 3.0L TURBO, 3.0L TWIN TURBO 2.0L TURBO 2.0L TURBO 3.0L TURBO HYBRID 3.0L TURBO, 3.0L TWIN TURBO ACTIVE CRUISE CONTROL AUC SENSOR AUXILIARY WATER PUMP (HYBRID) ELECTRIC COOLANT PUMP 2 (EXCEPT HYBRID) BLK WIRE BRN WIRE BRN/BLK WIRE CAMERA ELECTRO- BASED CHROMIC DRIVER INTERIOR ASSISTANCE REARVIEW SYSTEMS MIRROR DME MAIN RELAY DRIVER'S LUMBER SUPPORT SWITCH DYNAMIC STABILITY CONTROL (DSC) ELECTRIC COOLANT PUMP ELECTRIC LEFT REAR FAN VANITY CUT OUT MIRROR RELAY LIGHT ELECTRIC MACHINE ELECTR- ONICS (HYBRID) ELECTRIC MACHINE- ELECTRONICS (HYBRID) ELECTRO- MECHANICAL POWER STEERING ELECTRONIC TRANSMISSION CONTROL ENVIRONMENTAL AIR CATALYST SENSOR (2.0L TURBO) FROM FUSE 68 (DIAGRAM 1 OF 4) FUSE FROM TERMINAL FROM TRANSFER TERMINAL POINT (DIAGRAM 1 OF 4) FRONT FRONT ELECTRONIC MODULE FRONT ELECTRONIC MODULE (RIGHT END OF DASH) FRONT PASSENGER'S SEAT BACKREST FRONT POWER DISTRIBUTION BOX (RIGHT REAR OF ENGINE COMPT) FRONT REFRIGERANT SHUT-OFF VALVE (HYBRID) FUSE FUSE 29 FUSE 33 FUSE 36 FUSE 37 FUSE 41 FUSE 47 FUSE 55 FUSE 56 FUSE 63 FUSE FUSE GRN WIRE GRN/BLU WIRE GRY WIRE HIGH VARIANT ROOF FUNCTIONS MODULE IGNITION, FUEL INJECTION RELAY PASSENGER'S LUMBER SUPPORT VALVE BLOCK POWER DISTRIB- UTION BOX RAIN/ RIGHT DRIVING LIGHTS REAR CONDENSATION/ VANITY SOLAR MIRROR SENSOR LIGHT REAR REAR DRIVER'S PASSENGER'S SIDE SEAT SIDE SEAT HEATING HEATING SWITCH SWITCH RED WIRE RED/WHT WIRE RED/YEL WIRE RELAY RIGHT FRONT LEFT FRONT VANITY VANITY MIRROR MIRROR LIGHT LIGHT START-STOP BUTTON STARTER MOTOR GENERATOR STEERING COLUMN CLUSTER SWITCH TRANSFER BOX VALVETRONIC RELAY VEHICLE SOUND GENERATOR VIO WIRE W/O AUTOMATIC ENGINE START-STOP FUNCTION WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIDTH ADJUSTMENT SWITCH YEL WIRE

12 V CONNE- CTION 1 ACTIVE FUEL TANK TANK SOUND TANK LOCKING DESIGN LOCKING VALVE VALVE AUTOMATIC LUGGAGE COMPARTMENT LID ACTUATION AUXILIARY CONTROL UNIT BASE PLATE COMBOX BLK WIRE BLU WIRE BOOT LID/ TAILGATE LOCK BRN WIRE CUT-OFF RELAY DVD CHANGER ELECTRONIC DAMPER CONTROL FROM DC/DC CONVERTER (DIAGRAM 4 OF 4) FROM FUSE BOX (DIAGRAM 1 OF 4) FRONT ELECTRONIC MODULE FUEL PUMP CONTROL (EKPS) FUSE FUSE 107 FUSE 109 FUSE 123 FUSE 135 FUSE 147 FUSE 148 FUSE 154 FUSE 163 FUSE 164 FUSE 165 FUSE FUSE FUSE FUSE FUSE GRN WIRE GRY WIRE INFOTAIN- HIFI MENT AMPLIFIER FAN W/O TRAILER MODULE LANE ALL ROUND DEPARTURE VISION WARNING CAMERA LUGGAGE COMPARTMENT LIGHT NCA WIRE REAR FULLY DRIVER'S AUTOMATIC SIDE SEAT TOWING HEATING HITCH MODULE REAR PASSENGER'S SIDE SEAT HEATING MODULE RED WIRE RED/BRN WIRE SAFETY BATTERY TERMINAL GENERATOR SIREN W/ TILT ALARM SENSOR TERMINAL TIRE PRESSURE CONTROL TO BISTABLE RELAY (DIAGRAM 4 OF 4) FUSE TO DC/DC CONVERTER (DIAGRAM 4 OF 4) TO REAR ELECTRONIC MODULE (DIAGRAM ELECTRONIC 4 OF 4) DAMPER CONTROL TOP HIFI AMPLIFIER TOP HIFI AUTOMATIC AMPLIFIER LUGGAGE COMPARTMENT LID ACTUATION TRAILER SOCKET (IF EQUIPPED) VIDEO MODULE VIO WIRE WHT WIRE YEL WIRE

3.0L TURBO, 3.0L TWIN TURBO 2.0L TURBO ACCUMULATOR MANAGEMENT ELECTRONICS (HYBRID) AUXILIARY BATTERY (HYBRID) BISTABLE RELAY BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMBOX TELEMATIC COMMUNICATION BOX CONTACT FREE TAILGATE OPENING EVALUATION ELECTRONICS CUT-OFF RELAY DC/DC CONVERTER DIAGNOSIS PLUG DIGITAL FRONT MOTOR ELECTRONIC ELECTRONICS MODULE DRIVER ASSISTANCE SYSTEMS OPERATING UNIT DRIVER ELECTRONIC OUTER DOOR HANDLE MODULE ELECTRIC MACHINE- ELECTRONICS (HYBRID) FROM FRONT POWER DISTRIBUTION BOX (DIAGRAM 1 OF 4) FROM FUSE 160 (DIAGRAM 3 OF 4) FROM FUSE BOX (DIAGRAM 1 OF 4) FROM REAR FUSE HOLDER (DIAGRAM 3 OF 4) FRONT ELECTRONIC MODULE FRONT ELECTRONIC MODULE (RIGHT END OF DASH) FUSE FUSE 10 FUSE 114 FUSE 113 FUSE 120 FUSE 149 FUSE 150 FUSE BOX 2 FUSE 600 FUSE FUSE FUSE GRN WIRE GRN/WHT WIRE GRY WIRE HEATING/ AIR CONDITIONING SYSTEM HORN RELAY INTELLIGENT BATTERY LEFT HEADLIGHT NATURAL VACUUM LEAK DETECTION TEMPERATURE SENSOR, PRESSURE SWITCH NCA WIRE PASSENGER ELECTRONIC OUTER DOOR HANDLE MODULE REAR ELECTRONIC MODULE REAR ELECTRONIC MODULE (RIGHT FUSE REAR OF LUGGAGE COMPT) REAR FUSE HOLDER (RIGHT SIDE OF REAR COMPT) REAR WINDOW DEFOGGER RELAY RED WIRE RED/BRN WIRE SENSOR 2 SOLID STATE STARTER MOTOR GENERATOR STEERING LIGHT COLUMN SWITCH SWITCH UNIT CLUSTER TERMINAL SOLID STATE TO REAR FUSE HOLDER (DIAGRAM 3 OF 4) TRAILER MODULE TRAILER SOCKET TRANSFER TERMINAL POINT 3 VIO WIRE W/ TELEMATIC W/ COMMUNICATION COMBOX BOX W/ W/O TRAILER TRAILER MODULE MODULE WHT WIRE WHT/BLU WIRE YEL WIRE