BMW 3 series G20/G21 (2018-2023) front electric auxiliary heater Wiring diagrams

AIR CONDITIONING AIR DISTRIBUTION MICROSWITCH AUXILIARY WATER PUMP BASIC BLK WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BODY DOMAIN CONTROLLER BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT POWER DISTRIBUTION BOX FRONT ELECTRIC AUXILIARY HEATER FUSE 3 FUSE 402 GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ BI-STABLE RELAY ENERGIZED NCA WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE REFRIGERANT PRESSURE SENSOR RIGHT FRONT VENTILATION GRILLE VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BRN WIRE WHT/GRN WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

AIR CONDITIONING COMPRESSOR AUXILIARY BATTERY BATTERY BLK WIRE BODY DOMAIN CONTROLLER BRN WIRE BRN/BLK WIRE CAN BUS TERMINAL RESISTOR 2 CAN BUS TERMINAL RESISTOR 6 CONTACT FREE TAILGATE OPERATING EVALUATION ELECTRONICS DIGITAL MOTOR ELECTRONICS ELECTRIC FAN ELECTRIC FUEL PUMP CONTROL ELECTRONICS ELECTRICAL EXHAUST FLAP ELECTROMECHANICAL POWER STEERING ELECTRONIC TRANSMISSION CONTROL FRONT ELECTRIC AUXILIARY HEATER FRONT PASSENGER'S SEAT OCCUPANCY DETECTION EVALUATION ELECTRONICS HEAT MANAGEMENT MODULE INTELLIGENT BATTERY SENSOR INTERFERENCE SUPPRESSION FILTER LEFT REAR NEAR RANGE RADAR SENSOR LOW TEMPERATURE COOLANT CIRCUIT COOLANT PUMP NATURAL VACUUM LEAK DETECTION NCA WIRE REAR PASSENGER'S SIDE FOOTWELL LIGHT REAR POWER DISTRIBUTION BOX REAR VIEW CAMERA REAR VIEW CAMERA SHIELD REGULATED DIFFERENTIAL LOCK RIGHT REAR DOOR SILL LIGHT STRIP RIGHT REAR NEAR RANGE RADAR SENSOR TELEMATIC COMMUNICATION BOX TRANSFER BOX TURBOCHARGER COOLANT PUMP

ALTERNATOR AUXILIARY BATTERY (RIGHT SIDE OF ENGINE COMPT) BATTERY BATTERY ELECTRONICS BLK WIRE BLU/YEL WIRE BRN (OR BLK) WIRE BRN WIRE CAPACITOR BOX COMPUTER DATA LINES SYSTEM CRASH SAFETY MODULE DIGITAL MOTOR ELECTRONICS DME MAIN RELAY DYNAMIC STABILITY CONTROL (DSC) ELECTRIC FAN CUT-OFF RELAY ELECTROMECHANICAL POWER STEERING ENGINE COMPARTMENT POWER DISTRIBUTION BOX FROM REAR POWER DISTRIBUTION BOX (DIAGRAM 5 OF 8) FROM RIGHT FRONT POWER DISTRIBUTION BOX (DIAGRAM 3 OF 8) FROM SAFETY BATTERY TERMINAL GAS GENERATOR (DIAGRAM 1 OF 8) FRONT ELECTRIC AUXILIARY HEATER FUSE 400 FUSE 401 FUSE 402 FUSE 404 FUSE 406 GRY WIRE IGNITION, FUEL INJECTION RELAY INTEGRATED SUPPLY MODULE (LEFT SIDE OF ENGINE COMPT) INTELLIGENT BATTERY SENSOR JUMP START TERMINAL NCA WIRE ON BATTERY) POWER SUPPLY SENSORS/ ACTUATORS RELAY RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE SAFETY BATTERY TERMINAL GAS GENERATOR STARTER MOTOR TO AUXILIARY BATTERY (DIAGRAM 1 OF 8) TO FUSE BOX (DIAGRAM 2 OF 8) TRANSFER TERMINAL POINT VALVETRONIC RELAY VIO WIRE YEL WIRE