Acura MDX III facelift 2 (2016-2021) brake light relay Wiring diagrams

3.0L HYBRID 3.5L 3.0L HYBRID 3.5L W/O AUTO IDLE STOP SYSTEM 3.5L W/ AUTO IDLE STOP SYSTEM BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRAKE PEDAL POSITION SWITCH BRN WIRE CABLE REEL COMPUTER DATA LINES SYSTEM CONNECTOR DRIVER'S JUNCTION BOX A DRIVER'S UNDER-DASH FUSE/RELAY BOX ELECTRIC PARKING BRAKE/ AUTOMATIC BRAKE HOLD SWITCH FUSE 11 FUSE 16 FUSE 18 FUSE 19 FUSE 23 FUSE 27 FUSE 28 GRN WIRE GRY WIRE HORNS SYSTEM HOT AT ALL TIMES LT BLU WIRE LT GRN WIRE MICU NCA WIRE OPTIONAL PCM PNK WIRE PPL RED WIRE RELAY CONTROL MODULE SBW SHIFTER CONTROL MODULE SECURITY HOOD SWITCH STEERING COLUMN) TAILGATE LOCK SWITCH UNDER-HOOD FUSE/RELAY BOX WHT WIRE YEL WIRE

APP SENSOR APP SENSOR A APP SENSOR B BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRN WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM ELECTRIC SERVO BRAKE CONTROL UNIT ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) RELAY FUSE 10 FUSE 9 GRN WIRE HOT AT ALL TIMES LT BLU WIRE LT GRN WIRE MAP SENSOR OUTPUT SHAFT SPEED SENSOR PCM PGM-FI MAIN RELAY 1 PNK WIRE PPL RED WIRE TAN WIRE THROTTLE ACTUATOR THROTTLE BODY (TOP REAR OF ENGINE) THROTTLE OPEN SENSOR UNDER-HOOD FUSE/RELAY BOX WHT WIRE YEL WIRE

BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRIC SERVO BRAKE CONTROL UNIT FUSE 3-8 FUSE 8 GRN WIRE GRY WIRE HALL SENSOR HOT AT ALL TIMES KEYLESS ACCESS/TPMS CONTROL UNIT LT BLU WIRE MAIN UNDER- HOOD FUSE BOX MOTOR OPTION CONNECTOR (TRAILER) OPTIONAL CONNECTOR PCM PNK WIRE PPL RED WIRE TAN WIRE TANDEM MOTOR CYLINDER (LEFT SIDE OF ENGINE COMPT) UNDER-HOOD FUSE/RELAY BOX WHT WIRE YEL WIRE

AUXILIARY UNDER-DASH FUSE/RELAY BOX BACKUP LAMPS CIRCUIT BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRN WIRE DRIVER'S UNDER-DASH FUSE/RELAY BOX ELECTRIC SERVO BRAKE CONTROL UNIT FUSE 23 FUSE 24 FUSE 4 GRN WIRE GRN/WHT WIRE HIGH MOUNT BRAKE LIGHT HOT W/ DC-DC KEYLESS ACCESS/TPMS CONTROL UNIT LEFT REAR TURN SIGNAL LIGHT OPTION CONNECTOR (FOR TRAILER) PPL RELAY ENERGIZED RIGHT BRAKE LIGHT RIGHT REAR TURN SIGNAL LIGHT TAN WIRE UNDER-HOOD FUSE/RELAY BOX VSA MODULATOR CONTROL UNIT W/ AUTO IDLE STOP SYSTEM EXCEPT HYBRID HYBRID WHT WIRE YEL WIRE

A/C COMPRESSOR CLUTCH RELAY A/C CONDENSER FAN RELAY ALTERNATOR AUXILIARY UNDER-DASH RELAY BLOCK A AUXILIARY UNDER-DASH RELAY BLOCK B BATTERY BATTERY FAN MOTOR BATTERY SENSOR BATTERY TERMINAL FUSE BOX BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRAKE PEDAL POSITION SWITCH BRN WIRE CABLE REEL DRIVER'S JUNCTION BOX B DRIVER'S UNDER-DASH FUSE/RELAY BOX EPS CONTROL UNIT FROM MAIN UNDER-HOOD FUSE BOX (DIAGRAM 2 OF 10) FROM MAIN UNDER-HOOD FUSE BOX (DIAGRAM 9 OF 10) FRONT FOG LIGHT RELAY FUSE 1 FUSE 10 FUSE 17 FUSE 18 FUSE 2-1 FUSE 2-2 FUSE 2-3 FUSE 2-4 FUSE 2-5 FUSE 2-6 FUSE 2-7 FUSE 2-8 FUSE 29 FUSE 30 FUSE 6 FUSE 7 FUSE 8 FUSE 9 GAUGE CONTROL MODULE GRN WIRE GRY WIRE HAZARD WARNING SWITCH HORN RELAY LEFT HEADLIGHT LT BLU WIRE MAIN UNDER- HOOD FUSE BOX MICU POWER DOOR LOCK RELAY (DR UNLOCK) POWER DOOR LOCK RELAY (LOCK) POWER DOOR LOCK RELAY (UNLOCK) POWER TAILGATE CONTROL UNIT POWER TILT/ TELESCOPE STEERING CONTROL UNIT RADIATOR FAN RELAY REAR BLOWER MOTOR RELAY REAR FUSE/ RELAY BOX RED WIRE RIGHT HEADLIGHT STARTER STEERING COLUMN) STEERING COMMANDER SWITCH ASSEMBLY TAN WIRE TO AUXILIARY UNDER-DASH FUSE BOX (DIAGRAM 9 OF 10) TO FUSE 7 (DIAGRAM 2 OF 10) TO PASSENGER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 4 OF 10) UNDER-HOOD FUSE/RELAY BOX VSA MODULATOR CONTROL UNIT W/O AUTO IDLE STOP SYSTEM W/ AUTO IDLE STOP SYSTEM WHT WIRE YEL WIRE

A/C COMPRESSOR CLUTCH RELAY A/C DIODE A AUTOMATIC DIMMING INSIDE MIRROR AUXILIARY REAR RELAY BLOCK B (AWD) AUXILIARY REAR RELAY BLOCK A (FWD) AUXILIARY UNDER-DASH RELAY BLOCK B AUXILIARY UNDER-DASH RELAY BLOCK C BLU (OR BRN) WIRE BLU WIRE BLU/ BRN WIRE BRAKE LIGHT RELAY BRAKE PEDAL POSITION SWITCH BRN WIRE CENTER JUNCTION BOX CLIMATE CONTROL SWITCH CLIMATE CONTROL UNIT DIODE D DRIVER'S POWER WINDOW MASTER SWITCH DRIVER'S UNDER-DASH FUSE/RELAY BOX ELECTRIC STEERING LOCK ENGINE MOUNT CONTROL UNIT EPS CONTROL UNIT FROM AUXILIARY UNDER-DASH FUSE/RELAY BOX (DIAGRAM 9 OF 10) FROM UNDER-DASH SUB RELAY BOX (DIAGRAM 7 OF 10) FRONT BLOWER MOTOR RELAY FRONT SEAT HEATER RELAY FUSE 21 FUSE 22 FUSE 23 FUSE 24 FUSE 26 FUSE 27 GRN WIRE HEATED WINDSHIELD WIPER AREA RELAY KEYLESS ACCESS/TPMS CONTROL UNIT LT GRN WIRE OPTIONAL CONNECTOR PASSENGER'S UNDER-DASH FUSE/RELAY BOX PCM PGM-FI MAIN RELAY 2 POWER MIRROR SWITCH REAR BLOWER MOTOR RELAY REAR CLIMATE CONTROL PANEL REAR FUSE/ RELAY BOX REAR WINDOW DEFOGGER RELAY RED WIRE RELAY CONTROL MODULE SECOND SEAT HEATER RELAY STARTER CUT RELAY 1 STARTER CUT RELAY 2 STEERING ANGLE SENSOR STEERING WHEEL HEATER RELAY TO AC INVERTER UNIT (DIAGRAM 4 OF 10) TO DC-DC CONVERTER (DIAGRAM 9 OF 10) TO PASSENGER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 6 OF 10) UNDER-HOOD FUSE/RELAY BOX VSA MODULATOR CONTROL UNIT W/O AUTO IDLE STOP SYSTEM W/ AUTO IDLE STOP SYSTEM YEL WIRE

12 VOLT BATTERY 12 VOLT BATTERY SENSOR 12 VOLT BATTERY TERMINAL FUSE BOX BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRAKE PEDAL POSITION SWITCH BRN WIRE ELECTRIC OIL PUMP RELAY ELECTRIC SERVO BRAKE CONTROL UNIT EPS CONTROL UNIT FRONT BLOWER MOTOR RELAY FUSE 1 FUSE 10 FUSE 18 FUSE 2-1 FUSE 2-2 FUSE 2-3 FUSE 2-4 FUSE 2-5 FUSE 2-6 FUSE 2-7 FUSE 2-8 FUSE 3-1 FUSE 3-2 FUSE 3-3 FUSE 3-4 FUSE 3-5 FUSE 3-6 FUSE 3-7 FUSE 3-8 FUSE 4 FUSE 5 FUSE 6 FUSE 7 FUSE 8 FUSE 9 GRN WIRE GRY WIRE HEADLIGHT WASHER RELAY HIGH VOLTAGE MPI CONNECTOR HORN RELAY LT BLU WIRE PCU PNK WIRE POWER TAILGATE CONTROL UNIT REAR BLOWER MOTOR RELAY REAR FUSE/ RELAY BOX REAR WINDOW DEFOGGER RELAY UNDER-HOOD FUSE/RELAY BOX RED WIRE RELAY HOLDER A RELAY HOLDER C RELAY HOLDER E STARTER TO 12 VOLT BATTERY FAN MOTOR (DIAGRAM 4 OF 8) TO DRIVER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 2 OF 8) TO DRIVER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 3 OF 8) TO FUSE HOLDER A (DIAGRAM 2 OF 8) TO FUSE HOLDER B (DIAGRAM 2 OF 8) TO PASSENGER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 3 OF 8) TO PASSENGER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 4 OF 8) TO REAR FUSE/RELAY BOX (DIAGRAM 6 OF 8) TO UNDER-HOOD FUSE/RELAY BOX (DIAGRAM 2 OF 8) TO UNDER-HOOD FUSE/RELAY BOX (DIAGRAM 6 OF 8) UNDER-HOOD FUSE/RELAY BOX VSA MODULATOR CONTROL UNIT WHT WIRE YEL WIRE

ACC RELAY BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRAKE PEDAL POSITION SWITCH BRN WIRE DRIVER'S UNDER-DASH FUSE/RELAY BOX ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRIC SERVO BRAKE CONTROL UNIT ENGINE START/STOP SWITCH EPS CONTROL UNIT FROM FUSE HOLDER A (DIAGRAM 2 OF 8) FROM FUSE HOLDER B (DIAGRAM 2 OF 8) FUSE 13 FUSE 21 FUSE 22 FUSE 23 FUSE 24 FUSE 28 GRN WIRE GRY WIRE IMMOBILIZER I/F KEYLESS ACCESS/ TPMS CONTROL UNIT KEYLESS ACCESS/TPMS CONTROL UNIT LF ANTENNA LT BLU WIRE LT GRN WIRE MAF/IAT SENSOR MICU PCM PGM-FI MAIN RELAY 2 PNK WIRE PPL RED WIRE STARTER CUT RELAY 1 STARTER CUT RELAY 2 STEERING ANGLE SENSOR TAN WIRE TO DRIVER'S JUNCTION BOX A (DIAGRAM 4 OF 8) TO DRIVER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 7 OF 8) TO DRIVER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 8 OF 8) TO PASSENGER'S UNDER-DASH FUSE/RELAY BOX (DIAGRAM 4 OF 8) UNDER-DASH SUB-RELAY BOX UNDER-HOOD FUSE/RELAY BOX USB CHARGER UNIT B USB CHARGER UNIT C USB CHARGER UNIT D VSA MODULATOR CONTROL UNIT W/ REAR ENTERTAINMENT SYSTEM W/O REAR ENTERTAINMENT SYSTEM WHT WIRE YEL WIRE

3.0L HYBRID 3.5L 3.0L HYBRID 3.5L W/O AUTO IDLE STOP SYSTEM 3.5L W/ AUTO IDLE STOP SYSTEM BLK WIRE BLU WIRE BRAKE LIGHT RELAY BRAKE PEDAL POSITION SWITCH BRN WIRE CABLE REEL COMPUTER DATA LINES SYSTEM CONNECTOR DRIVER'S JUNCTION BOX A DRIVER'S UNDER-DASH FUSE/RELAY BOX ELECTRIC PARKING BRAKE/ AUTOMATIC BRAKE HOLD SWITCH FUSE 11 FUSE 16 FUSE 18 FUSE 19 FUSE 23 FUSE 27 FUSE 28 GRN WIRE GRY WIRE HORNS SYSTEM HOT AT ALL TIMES LT BLU WIRE LT GRN WIRE MICU NCA WIRE OPTIONAL PCM PNK WIRE PPL RED WIRE RELAY CONTROL MODULE SBW SHIFTER CONTROL MODULE SECURITY HOOD SWITCH STEERING COLUMN) TAILGATE LOCK SWITCH UNDER-HOOD FUSE/RELAY BOX WHT WIRE YEL WIRE