Cadillac CT4-V I (2019-2024) horns system Wiring diagrams

ACTR UNLOCK CTRL 1 AIR CONDITIONING SYSTEM AMBIENT LIGHT/SUNLOAD SENSOR BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRN/BLK WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE CAN BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH FUEL DR ACTR LOCK CTRL GRN/BLK WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IMMO ANT LOW SIG INTR KYLS ANT 1 HIGH SIG IMMO ANT SIG [+] INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK INTR KYLS ANT 1 LOW SIG INTR KYLS ANT 2 LOW SIG KYLS ANT HIGH SIG KYLS ANT LOW SIG LEFT LOW FREQUENCY BODY SIDE ANTENNA LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LF ACTR LOCK CTRL LF ANT HIGH SIG LF ANT LOW SIG LF DR EXTR SW LOCK SIG LIN BUS 16 LIN BUS 4 LOCK ACTR UNLOCK CTRL 2 LOW FREQUENCY INSTRUMENT PANEL ANTENNA LOW FREQUENCY REAR BUMPER ANTENNA LR DR EXTR SW LOCK SIG LR DR LOCK ACTR LOCK CTRL NCA WIRE OPEN SW SIG PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE SWITCH REAR BODY WIRING HARNESS JUNCTION BLOCK REAR DEFOG RLY CTRL RED/BLU WIRE RED/VIO WIRE REMOTE FUNCTION ACTUATOR MODULE RF DOOR ANT SIG HIGH INTR KYLS ANT 2 HIGH SIG RF DOOR ANT SIG LOW RF DR EXTR SW LOCK SIG RF DR LOCK ACTR LOCK CTRL RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RR DR EXTR SW LOCK SIG RR DR LOCK ACTR LOCK CTRL SCTY IND CTRL SCTY LOCK ACTR SIG LR SCTY LOCK ACTR SIG RR SCTY LOCK MTR LOCK CTRL SENS LOW REF VIO WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE YEL/GRN WIRE

A/C EVAPORATOR TEMPERATURE SENS SIG AIR CONDITIONING SYSTEM AIR CONDITIONING, DOOR LOCKS, ANTI-THEFT SYSTEMS AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM AUTOMATIC VEHICLE HOLD INDICATOR CTRL HEADLAMP SWITCH ON SIG AUTOMATIC VEHICLE HOLD SWITCH SIGNAL AUTOSAR CAN BUS (+) 2 SERIAL DATA BLK WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLOWER MOTOR SPEED CTRL BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BODY CONTROL MODULE LIN BUS 6 BODY CTRL MDL LIN BUS 11 BODY CTRL MODULE LIN BUS 5 BRN/BLK WIRE BRN/GRN WIRE BRN/WHT WIRE CHILD SECURITY LOCK ACTUATOR CHILD SECURITY LOCK ACTUATOR STATUS SIG RIGHT REAR CHILD SECURITY LOCK MOTOR LOCK CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE CONTROL, TRANSMISSIONS SYSTEMS CRUISE CTRL SET/COAST/ RESUME/ACCELERATE SWITCH SIG CURB VIEW ENABLE SIGNAL DISTANCE SENSING CRUISE CTRL GAP UP/DOWN SWITCH SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER MODE 1 SWITCH SIG DRIVER MODE 2 SWITCH SIGNAL DRIVER SOLAR SENS SIG ENHANCED DRIVER MODE 1 SWITCH SIG FOOTWELL ACCENT LIGHTING CTRL FRONT FOOTWELL ACCENT LIGHTING CTRL GND 14 GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE HAZARD WARNING SWITCH SIG HEADLAMP SWITCH FLASH SIG HEADLAMP SWITCH OFF SIG HEADLAMP SWITCH PARK LAMP SIG HEADLIGHTS SYSTEM HIGH BEAM SELECT SWITCH HIGH BEAM SIG HORN SWITCH SIG HORNS SYSTEM HOT AT ALL TIMES HVAC REMOTE ENABLE SIG HVAC SYSTEM ENABLE SIG IGNITION MODE SWITCH ACCESSORY LED SIG IGNITION MODE SWITCH MODE VOLTAGE IMMOBILIZER ANTENNA LOW SIG IMMOBILIZER ANTENNA SIG (+) INSIDE AIR TEMPERATURE SENS SIG INSTRUMENT PANEL ACCENT LIGHTING CTRL INSTRUMENT PANEL FUSE BLOCK INTERIOR LAMP SIGNAL INTERIOR PASSIVE ENTRY ANTENNA 1 HIGH SIG INTERIOR PASSIVE ENTRY ANTENNA 1 LOW SIG LEFT TURN SIG SWITCH SIG NAVIGATION SYSTEM POWER DISTRIBUTION SYSTEM REAR COMPARTMENT COURTESY LAMP CTRL REAR FOOTWELL ACCENT LIGHTING CTRL RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RETAINED ACCESSORY POWER RELAY 2 COIL CTRL RIGHT TURN SIG SWITCH SIG RUN/CRANK RELAY COIL CTRL SECONDARY FUSED BATTERY POSITIVE VOLTAGE 21 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 22 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 25 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 40 SECURITY INDICATOR CTRL SENS LOW REFERENCE SOUND SYSTEMS STARTING/CHARGING, POWER DISTRIBUTION SYSTEMS STATUS SIG LEFT REAR STEERING WHEEL RESISTOR LADDER LOW REFERENCE TAP UP/DOWN SWITCH SIG TRACTION CTRL SWITCH SIG 1 TRANSMISSIONS SYSTEM VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER SWITCH SIG WINDSHIELD WIPER SWITCH LOW REFERENCE WINDSHIELD WIPER SWITCH LOW SIG WIPER/WASHER SYSTEM YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

A/C COMPRESSOR SOLENOID VALVE CTRL AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES, EXTERIOR LIGHTS SYSTEMS AUTO HIGH BEAM ASSIST SWITCH SIG AUTOSAR CAN BUS (+) 2 SERIAL DATA BLK/BRN WIRE BLK/YEL WIRE BLOWER SPEED FEEDBACK SIG BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BODY CTRL MODULE LIN BUS 12 BODY CTRL MODULE LIN BUS 16 BODY CTRL MODULE LIN BUS 2 BODY CTRL MODULE LIN BUS 3 BODY CTRL MODULE LIN BUS 4 BODY CTRL MODULE LIN BUS 8 BODY CTRL MODULE LIN BUS 9 BRAKE APPLY SENS LOW REFERENCE BRAKE APPLY SENS SIG BRAKE APPLY SENS VOLTAGE REFERENCE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS CRUISE/ETC/TCC BRAKE SIG DEFOGGER SYSTEM DOME/READING LAMP CTRL DOME/READING LAMP ENABLE SIG DOOR DEAD LOCK ACTUATOR LOCK CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER MODE 2 SW SIG GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE HANDSFREE LIFTGATE SENSOR LAMP CTRL HEADLIGHTS SYSTEM HOOD STATUS B SIG HORN RELAY CTRL HORNS SYSTEM IGNITION MODE SWITCH START LED SIG INSTRUMENT PANEL LAMP DIMMER SWITCH LOW REFERENCE INSTRUMENT PANEL LAMP DIMMER SWITCH SIG INTERIOR DOOR HANDLE ACCENT LIGHTING CTRL INTERIOR PASSIVE ENTRY ANTENNA 2 HIGH SIG INTERIOR PASSIVE ENTRY ANTENNA 2 LOW SIG KEY CAPTURE/COLUMN LOCK SHIFT POSITION SIG LANE DEPARTURE WARNING DISABLE SWITCH SIG LANE DEPARTURE WARNING INDICATOR CTRL REAR PARKING ASSIST DISABLE LED SIG LED BACKLIGHT DIMMING CTRL 1 LEFT FRONT DOOR EXTERIOR SWITCH LOCK SIG LEFT FRONT DOOR LOCK ACTUATOR LOCK CTRL LEFT FRONT DOOR OPEN SWITCH SIG LEFT REAR DOOR EXTERIOR SWITCH LOCK SIG LEFT REAR DOOR LOCK ACTUATOR LOCK CTRL LEFT REAR SEAT HAPTIC MOVEMENT MOTOR CTRL LOCK ACTUATORS UNLOCK CTRL 1 LOCK ACTUATORS UNLOCK CTRL 2 NAVIGATION SYSTEM PARK LOCK SOLENOID ACTUATOR CTRL PASSIVE ENTRY LEFT FRONT ANTENNA SIG HIGH PASSIVE ENTRY LEFT FRONT ANTENNA SIG LOW PASSIVE ENTRY RIGHT FRONT ANTENNA SIG HIGH PASSIVE ENTRY RIGHT FRONT DOOR ANTENNA SIG LOW POWER DISTRIBUTION SYSTEM REAR CLOSURE HANDLE SWITCH OPEN SIG REAR CLOSURE KEYLESS ENTRY ANTENNA HIGH SIG REAR CLOSURE KEYLESS ENTRY ANTENNA LOW SIG REAR CLOSURE UNLATCH ACTUATOR UNLATCH CTRL REAR DEFOGGER RELAY CTRL REAR PARKING ASSIST DISABLE SIG RIGHT FRONT DOOR EXTERIOR SWITCH LOCK SIG RIGHT FRONT DOOR LOCK ACTUATOR LOCK CTRL RIGHT REAR DOOR EXTERIOR SWITCH LOCK SIG RIGHT REAR DOOR LOCK ACTUATOR LOCK CTRL RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR CTRL SHIFT INTERLOCK SYSTEM SOUND SYSTEMS TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

ACTR UNLOCK CTRL 1 AIR CONDITIONING SYSTEM AMBIENT LIGHT/SUNLOAD SENSOR BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRN/BLK WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE CAN BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH FUEL DR ACTR LOCK CTRL GRN/BLK WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IMMO ANT LOW SIG INTR KYLS ANT 1 HIGH SIG IMMO ANT SIG [+] INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK INTR KYLS ANT 1 LOW SIG INTR KYLS ANT 2 LOW SIG KYLS ANT HIGH SIG KYLS ANT LOW SIG LEFT LOW FREQUENCY BODY SIDE ANTENNA LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LF ACTR LOCK CTRL LF ANT HIGH SIG LF ANT LOW SIG LF DR EXTR SW LOCK SIG LIN BUS 16 LIN BUS 4 LOCK ACTR UNLOCK CTRL 2 LOW FREQUENCY INSTRUMENT PANEL ANTENNA LOW FREQUENCY REAR BUMPER ANTENNA LR DR EXTR SW LOCK SIG LR DR LOCK ACTR LOCK CTRL NCA WIRE OPEN SW SIG PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE SWITCH REAR BODY WIRING HARNESS JUNCTION BLOCK REAR DEFOG RLY CTRL RED/BLU WIRE RED/VIO WIRE REMOTE FUNCTION ACTUATOR MODULE RF DOOR ANT SIG HIGH INTR KYLS ANT 2 HIGH SIG RF DOOR ANT SIG LOW RF DR EXTR SW LOCK SIG RF DR LOCK ACTR LOCK CTRL RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RR DR EXTR SW LOCK SIG RR DR LOCK ACTR LOCK CTRL SCTY IND CTRL SCTY LOCK ACTR SIG LR SCTY LOCK ACTR SIG RR SCTY LOCK MTR LOCK CTRL SENS LOW REF VIO WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE YEL/GRN WIRE