Lexus IS III (2013-2016) headlight dimmer switch assembly Wiring diagrams

+IG BLK WIRE BLU WIRE BRN WIRE CERTIFICATION ECU (RIGHT SIDE OF TRUNK) COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DOME+B ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GAUGE FUSE GND TR TL GRN RED/ WIRE GRN WIRE GRN/ LT WIRE GRN/RED WIRE GRY WIRE HAZARD SWITCH HEAD AUTO HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT W/ LH-IG 1 RELAY ENERGIZED INPUT CIRCUIT JUNCTION LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT MAIN BODY ECU LH TURN IND LH-IG FUSE LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MICRO COMPUTER MPX+ MPX- MPX-B FUSE NETWORK GATEWAY ECU (RIGHT END OF DASH) OFF OFF TAIL ORG/ WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) POWER SUPPLY CIRCUIT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY RED GRN/ WIRE RED WIRE RELAY ENERGIZED RH TURN IND RIGHT COWL SIDE J/B (RIGHT END OF DASH) TAIL TAIL IND (EXCEPT USA) TURN SWITCH WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

ALL DR LOCK RELAY BKUP LP RELAY BLU WIRE BRN WIRE CERTIFICATION ECU COMBINATION METER ASSEMBLY D DR UNLOCK RELAY DATA LINK CONNECTOR 3 FUEL LOCK RELAY HEADLIGHT DIMMER SWITCH ASSEMBLY KA (LEFT KICK PANEL) KC (RIGHT END OF DASH) L/D DR P/OUTLET UNLOCK RELAY RELAY LEFT VISOR ASSEMBLY LUGGAGE DOOR OPENING SWITCH ASSEMBLY MAIN BODY ECU MAP LIGHT ASSEMBLY RELAY 2 RELAY 3 REMOTE CLOCK OPERATION ASSEMBLY SWITCH SLIDING ROOF CONTROL ECU (SLIDING ROOF RIGHT GEAR SUB VISOR ASSEMBLY) ASSEMBLY SPIRAL CABLE W/ SENSOR SUB ASSEMBLY (STEERING COLUMN) SPIRAL CABLE W/ SENSOR SUB-ASSEMBLY (UNDER STEERING WHEEL) STEERING LOCK ACTUATOR ASSEMBLY STEERING PAD RADIO SWITCH RECEIVER ASSEMBLY ASSEMBLY STEERING PAD SWITCH ASSEMBLY STEERING WHEEL HEATER CONTROL ASSEMBLY TIRE PRESSURE MONITOR INITIATOR OPTION DRIVER CONNECTOR TIRE PRESSURE WARNING RESET SWITCH (PRESSURE WARNING SWITCH 1) TRUNK OPN RELAY 1 RELAY RELAY W/ FRONT FOG LIGHT W/ NAVIGATION SYSTEM W/O NAVIGATION SYSTEM W/ NETWORK GATEWAY ECU WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YAW RATE SENSOR

+IG 4 6 7 5 HEAD AUTO BATB BLK WIRE BLU WIRE BRN WIRE CLTB CLTE CLTS COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DCTY DIMMER SWITCH DOME +B DRL OFF IND ECU-IG RH FUSE FLASH LOW FOG SWITCH FR DOOR RH FUSE FRONT FOG IND BEAM IND FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRY WIRE HEAD HEAD AUTO HEAD CLTB CLTS CLTE HEAD IND (USA) HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM MPX-B R/B 1 FUSE (RIGHT REAR OF ENGINE COMPT) HOT IN ON OR ACC HOT IN ON OR START HU HF INPUT CIRCUIT LCTY LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH (LEFT "B" PILLAR) LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MICRO COMPUTER MPX+ MPX- OFF TAIL ORG/ WIRE POWER SUPPLY CIRCUIT RCTY PCTY REAR FOG IND RED WIRE RED/WHT WIRE RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT MAIN BODY ECU RIGHT REAR DOOR COURTESY LIGHT SWITCH (RIGHT "C" PILLAR) TAIL TI, TE FUSE TO LEFT COWL SIDE J/B (DIAGRAM 2 OF 2) WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 IG 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 RH+ LH+ SBR 13 14 12 CANL CANH 31 32 BECU IG AUTO TAIL HEAD BLK WIRE BRN WIRE CAN I/F CANADA USA COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DISPLAY DRIVER DRL OFF OFF ECU-B FUSE ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) FRWA FUSE GRN WIRE GROUND J/C 1 (LEFT REAR OF ENGINE COMPT) GRY WIRE HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT LEVELING ACTUATOR HEADLIGHT LEVELING ECU ASSEMBLY (LEFT KICK PANEL) HLC RHT LHT SHRL HOT AT ALL TIMES HOT W/ INSTRUMENT PANEL J/B KA (LEFT KICK PANEL) KC (RIGHT KICK PANEL) LED DRIVER LEFT HEADLIGHT ASSEMBLY LEFT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (LEFT REAR SUSPENSION) LH E LH T LHIG LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MAIN BODY ECU (IN INSTRUMENT PANEL J/B) METER (LEFT END FUSE OF DASH) MPX-B 1 FUSE ORG/ WIRE OUT RED WIRE RH E RH LH RH T RHIG RIGHT HEADLIGHT ASSEMBLY SGR TELLTALES VCC VIO WIRE WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM YEL WIRE

AUTO BLK WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY (LEFT REAR OF ENGINE COMPT) BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DIMMER SWITCH ECU-IG RH FUSE ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) FLO FRO FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HEAD HEAD AUTO HEADLIGHT DIMMER SWITCH ASSEMBLY HIGH LOW FLASH HOT AT ALL TIMES INPUT CIRCUIT LCD (MULTI) LEFT COWL SIDE J/B (LEFT END OF DASH) LIGHT CONTROL SWITCH LT GRN WIRE MICRO COMPUTER MPX OFF TAIL ORG/ WIRE POWER SUPPLY CIRCUIT RED WIRE RED/BLU WIRE RELAY ENERGIZED RIGHT COWL SIDE J/B (RIGH END OF DASH) RIGHT COWL SIDE J/B (RIGHT END OF DASH) RIGHT MAIN BODY ECU TAIL WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY

1 2 3 4 5 6 HDLO 2 4 5 6 7 IG HEAD BLK WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE COMPUTER DATA LINES SYSTEM ECU-IG RH FUSE FRONT CONTROLLER FRWA PB GRN WIRE GRY WIRE HEAD AUTO HEAD HDLO HEAD LP RELAY HEADLAMP CLEANER SWITCH ASSEMBLY HEADLIGHT CLEANER CONTROL RELAY (BELOW LEFT HEADLIGHT) HEADLIGHT CLEANER MOTOR, PUMP ASSEMBLY (WASHER RESERVOIR) HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM HOT AT ALL TIMES ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) J/B 2 (LEFT SIDE OF ENGINE COMPT) WASHER FUSE LEFT COWL SIDE J/B (LEFT END OF DASH) LH-IG 1 RELAY LH-IG FUSE LIGHT CONTROL SWITCH MAIN FUSE OFF OFF TAIL ORG/ WIRE PNK 34 24 7 WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) R/B 2 (LEFT SIDE OF ENGINE COMPT) H-LP CLN FUSE RED WIRE RED/GRN WIRE RED/WHT WIRE RH-IG 1 RELAY RIGHT MAIN BODY ECU TAIL HEAD AUTO WASH RELAY WASHER SWITCH WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE WINDSHIELD WASHER MOTOR, PUMP ASSEMBLY (WASHER RESERVOIR) WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

14 11 TRLY 14 13 CANH CANL 20 19 21 CLTS CLTB CLTE 22 8 12 TAIL 32 31 30 IG BECU 4 1 2 CLTS CLTB CLTE ACAN AUTO DRL OFF OFF TAIL HEAD AUTOMATIC LIGHT CONTROL SENSOR (RIGHT SIDE OF DASH, AT BASE OF WINDSHIELD) BLK WIRE BLU WIRE CANADA COMPUTER DATA LINES SYSTEM CONTROL DOME LIGHT SWITCH ECU-ACC FUSE ECU-B FUSE ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) FUSE GLOVE BOX LIGHT GRN WIRE GRY WIRE HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES ILLB INSTRUMENT PANEL J/B (LEFT END OF DASH) J/B LH-AM FUSE KA (LEFT KICK PANEL) KC (RIGHT KICK PANEL) LIGHT CONTROL SWITCH LILL LT GRN WIRE MAIN BODY ECU (IN INSTRUMENT PANEL J/B) MAP LIGHT ASSEMBLY MAP LIGHT SWITCH ORG/ WIRE PANEL FUSE PNK WIRE RED WIRE RELAY RELAY ENERGIZED RILL RLMP SLIDING ROOF SOLAR SENSOR SPOT LIGHT ASSEMBLY SWITCH TAIL AUTO OFF DRL OFF HEAD TAIL RELAY USA WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BLU/RED WIRE BRAKE ACTUATOR ASSEMBLY (LEFT REAR OF ENGINE COMPT) COMPUTER DATA LINES SYSTEM DOWN ECM (ENGINE CONTROL MODULE) (LEFT FRONT OF ENGINE COMPT) FR DOOR LH FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES JUNCTION JUNCTION CONNECTOR LEFT COWL SIDE J/B (LEFT END OF DASH) LH-IG 1 RELAY LH-IG FUSE LONG LT GRN WIRE MSW NETWORK GATEWAY ECU (RIGHT END OF DASH) PARK/ NEUTRAL POSITION SWITCH (TRANSMISSION ASSEMBLY) PNK 1 2 3 WIRE PNK WIRE RED WIRE SHORT SWITCH TILT, TELESCOPIC WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE