Lexus LS II (1994-2000) instrument panel junction block (at rear of parking brake release lever) Wiring diagrams

7 6 5 4 3 2 1 +B BDR BECU TKUL MPX- BLK WIRE BLU RED/ WIRE BLU/BLK WIRE BLU/RED WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER JUNCTION BLOCK (BEHIND INSTRUMENT CLUSTER) COMPUTER DATA LINES SYSTEM CTYE CTY D FR DOOR FUSE DOME FUSE DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) EXTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM FUSE HOLDER (BEHIND LEFT SIDE OF DASH) GRD GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HORN HRLY TRLY SH HORNS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES HOT IN ACCY OR RUN HOT IN RUN OR START INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 9 (RIGHT KICK PANEL) KEYLESS BUZZER (AT LEFT REAR CORNER OF ENGINE COMPT) KEYLESS BUZZER ON/OFF SWITCH KL KEYE KUL BDR A+ A- LSWE LSW ML MUL PWE LEFT FRONT DOOR KEY LOCK/ UNLOCK SWITCH LEFT FRONT DOOR LOCK CONTROL SWITCH (POWER WINDOW MASTER SWITCH) LOCK LT GRN WIRE LUGGAGE COMPARTMENT DOOR KEY UNLOCK SWITCH MPX+ KSW HDCY MPX-B FUSE PNK PWS IND ACAN BZR WIRE PNK WIRE PNK/BLU WIRE PWR-IG FUSE RADIO 2 FUSE RDA RCO RED WIRE RED/BLU WIRE RED/YEL WIRE SIG CPUB GRD SIG RDA RCO HAZ THEFT DETERRENT HORN (AT RIGHT REAR CORNER OF ENGINE COMPT) TO CENTER JUNCTION BLOCK (DIAGRAM 2 OF 2) UNLK VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE WIRELESS DOOR LOCK CONTROL ECU (BEHIND RIGHT SIDE OF DASH) YEL WIRE YEL/RED WIRE

18 8 19 17 1 13 14 25 15 9 4 5 CTYE CTY LSWE LSW A+ A- BDR GRD CPUB SIG A- A+ LSW LSWE CTY CTYE DLE MUL ML BLK WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER JUNCTION BLOCK (BEHIND INSTRUMENT CLUSTER) COMPUTER DATA LINES SYSTEM CPUB SIG BDR KUL KEYE KL GRD CTYE CTY LSWE LSW A+ A- BDR CPUB SIG GRD GRD D RR DOOR FUSE P RR DOOR FUSE ENGINE HOOD COURTESY SWITCH (ENGINE COMPARTMENT) FROM ENGINE ROOM JUNCTION BLOCK (DIAGRAM 1 OF 2) FROM INSTRUMENT PANEL JUNCTION BLOCK (DIAGRAM 1 OF 2) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES FUSE HOLDER (BEHIND LEFT SIDE OF DASH) P FR DOOR FUSE INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 16 (BEHIND CENTER AIR VENTS) LEFT REAR DOOR ECU (IN LEFT REAR DOOR LOCK LOCK NOT USED LT GRN WIRE PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) PNK WIRE RED/BLU WIRE RHEOSTAT (SECURITY INDICATOR LIGHT) RIGHT FRONT DOOR KEY LOCK/ UNLOCK SWITCH RIGHT FRONT DOOR LOCK CONTROL SWITCH RIGHT REAR DOOR ECU (IN RIGHT REAR DOOR) SYSTEM ENGINE CONTROLS UNLK UNLOCK WARNING SWITCH (BEHIND LEFT SIDE OF DASH) VIO WIRE VIO/RED WIRE VIO/YEL WIRE WHT/BLK WIRE YEL WIRE

BACK- UP BACK- UP BLU/RED WIRE GAUGE FUSE HOT IN RUN OR START INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 4 (UPPER LEFT SIDE OF DASH) LEFT REAR COMBINATION LIGHT (INNER) PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) RED/BLK WIRE RIGHT REAR COMBINATION LIGHT (INNER) WHT/BLK WIRE

A/C CONTROL ASSEMBLY RDFGR BLK WIRE BLU WIRE BLU/WHT WIRE DEF FUSE DEFOG RELAY DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) FUSIBLE LINK BLOCK (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) J/C 16 (BEHIND CENTER AIR VENTS) J/C 6 (LEFT END OF DASH) J/C 9 (RIGHT KICK PANEL) LEFT REMOTE CONTROL MIRROR LT GRN WIRE MIR HTR FUSE MIRROR HEATER REAR WINDOW DEFOGGER RED WIRE RED/WHT WIRE RIGHT REMOTE CONTROL MIRROR VIO WIRE WHT WIRE

1 2 3 4 5 6 7 8 9 10 STP SPD REG 11 12 TC TS AIR SUS FUSE AIR SUSPENSION ECU (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY COMPUTER SYSTEM BRN/RED WIRE BRN/WHT WIRE CENTER JUNCTION BLOCK (BEHIND INSTRUMENT CLUSTER) DATA LINK CONNECTOR 1 (ON TOP LEFT SIDE OF ENGINE) DOME FUSE DOOR DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) ECU-IG FUSE ENGINE CONTROLS SYSTEM GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START HSW TD VH INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 18 (UPPER RIGHT END OF DASH) JUNCTION CONNECTOR J/C 5 (UPPER LEFT END OF DASH) JUNCTION CONNECTOR J/C 6 (LEFT END OF DASH) LEFT FRONT SUSPENSION CONTROL ACTUATOR (AT LEFT FRONT STRUT TOWER) LEFT REAR HEIGHT CONTROL SENSOR (UNDER LEFT REAR OF VEHICLE) LEFT REAR SUSPENSION CONTROL ACTUATOR (AT LEFT REAR STRUT TOWER) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE ORG/ WIRE PNK PPL WIRE PNK WIRE PPL PPL/RED WIRE PPL/WHT WIRE PPL/YEL WIRE RED WIRE RED/ BLK WIRE RED/WHT WIRE RIGHT REAR ACCELERATION SENSOR (CENTER OF LUGGAGE COMPT) RIGHT REAR HEIGHT CONTROL SENSOR (UNDER RIGHT REAR OF VEHICLE) SHRL SHRR SBL FBL+ FAL+ RBL+ RAL+ SGFL SHFL SHFR SGL FBL- FAL- RBL- RAL- STARTING/CHARGING SYSTEM STOP FUSE STOP-S FUSE STOPLIGHT SWITCH (BRAKE PEDAL BRACKET) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE

7 3 4 +B RCO RDA AUTO AUTOMATIC LIGHT CONTROL SENSOR (BEHIND UPPER LEFT SIDE OF DASH) BDR BDR BECU MPX- BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN/RED WIRE BRN/WHT WIRE CENTER JUNCTION BLOCK (BEHIND INSTRUMENT CLUSTER) CLTE CLTB CLTS COMPUTER DATA LINES SYSTEM CTYE CTY D FR DOOR FUSE DOME FUSE DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) FUSE HOLDER (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/WHT WIRE GRY WIRE HEADLIGHT SWITCH HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN ACCY OR RUN HOT IN RUN OR START HRLY TRLY AUTO HEAD TAIL INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 5 (BEHIND LEFT SIDE OF DASH) LEFT FRONT DOOR OPEN DETECTION SWITCH LEFT FRONT SIDE MARKER LIGHT LEFT LICENSE PLATE LIGHT LEFT PARKING LIGHT LT GRN/BLK WIRE MPX MPX-B FUSE PNK/BLU WIRE PWR-IG FUSE RADIO 2 FUSE RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT SIDE MARKER LIGHT RIGHT LICENSE PLATE LIGHT RIGHT PARKING LIGHT SIG CPUB GRD SIG RCO RDA HAZ TAIL HEAD TAIL AUTO OFF OFF VIO WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK CONTROL ECU (BEHIND RIGHT SIDE OF DASH) YEL WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 STOP SW HI MOUNT ST STOP LTS STOP LTS ALT FUSE BLK WIRE BLK/RED WIRE BLU WIRE BLU/RED WIRE COMBINATION METER FUSIBLE LINK BLOCK (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) GAUGE FUSE GRD SIGNAL GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HAZ FUSE HAZARD SWITCH HIGH MOUNTED STOP LIGHT HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) INTERIOR LIGHTS JUNCTION CONNECTOR J/C 5 (BEHIND LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 6 (LEFT SIDE OF DASH) LEFT LEFT FRONT TURN SIGNAL LIGHT LEFT REAR COMBINATION LIGHT (OUTER) LEFT TURN INDIC LIGHT FAILURE SENSOR (AT LEFT SIDE OF LUGGAGE COMPARTMENT) MARKR TAIL STOP MARKR TL STP TL ORG/ WIRE PPL PPL TAIL TAIL STOP SW PWR RED/BLK WIRE RED/WHT WIRE RIGHT RIGHT FRONT TURN SIGNAL LIGHT RIGHT REAR COMBINATION LIGHT (OUTER) LEFT, RIGHT REAR COMBINATION LIGHTS (INNER) RIGHT TURN INDIC RR LIGHTS WARNING STOP LIGHT SWITCH (BRAKE PEDAL BRACKET) STOP LP FUSE TAIL FUSE TAILLIGHT CONTROL RELAY TAILLT PWR TURN TURN FUSE TURN SIGNAL FLASHER (BEHIND LEFT SIDE OF DASH) TURN SIGNAL LIGHT SWITCH TURN STOP TAIL WHT WIRE WHT/BLK WIRE YEL/RED WIRE

A/C CONTROL ASSEMBLY A/C MAGNETIC CLUTCH AIRBAG SENSOR ASSEMBLY BLK/ WHT WIRE BRN WIRE CRUISE CONTROL SWITCH DATA LINK CONN- ECTOR 3 DATA LINK CONNECTOR 1 DATA LINK CONNECTOR 3 ENGINE CONTROL MODULE FRONT CIGARETTE LIGHTER FRONT PASSENGER'S SEAT CONTROL SWITCH FRONT PASSENGER'S SEAT HEATER GLOVE BOX LIGHT SWITCH 1 GLOVE BOX LIGHT SWITCH 2 HAZARD SWITCH HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 IGNITION MAIN RELAY IGNTION COIL, IGNITOR 1 IGNTION COIL, IGNITOR 2 IGNTION COIL, IGNITOR 3 IGNTION COIL, IGNITOR 4 IGNTION COIL, IGNITOR 5 IGNTION COIL, IGNITOR 6 IGNTION COIL, IGNITOR 7 IGNTION COIL, IGNITOR 8 INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 10 (LOWER RIGHT END OF DASH) JUNCTION CONNECTOR J/C 16 (BEHIND CENTER AIR VENTS) JUNCTION CONNECTOR J/C 3 (RIGHT KICK PANEL) LUGGAGE COMPARTMENT DOOR OPENER SWITCH MULTI-DISPLAY NCA WIRE PIONEER RADIO, PLAYER RIGHT BUCKLE SWITCH, BUCKLE LIGHT RIGHT REAR DOOR ECU STEREO COMPONENT AMPLIFIER VSC OFF SWITCH RHEOSTAT, SECURITY INDICATOR LIGHT W/ NAVIGATION SYSTEM WHT/BLK WIRE

7 3 4 +B RCO RDA AUTOMATIC LIGHT CONTROL SENSOR (BEHIND UPPER LEFT SIDE OF DASH) BDR BDR BECU MPX- BLK WIRE BLU WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN/RED WIRE BRN/WHT WIRE CENTER JUNCTION BLOCK (BEHIND INSTRUMENT CLUSTER) CLTE CLTB CLTS PPL COMPUTER DATA LINES SYSTEM CTYE CTY D FR DOOR FUSE DIMMER SWITCH FOGLIGHT SWITCH DIODE (DRL) (BEHIND LEFT KICK PANEL) DOME FUSE DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) FOG LIGHTS FUSE HOLDER (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE HEADLIGHT SWITCH HEADLIGHTS SYSTEM (HEADLIGHT BEAM LEVEL CONTROL) HIGH AUTO HIGH LOW LOW HOT AT ALL TIMES HOT IN ACCY OR RUN HOT IN RUN OR START HRLY TRLY AUTO HEAD TAIL INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 5 (UPPER LEFT END OF DASH) LEFT FRONT DOOR OPEN DETECTION SWITCH LT GRN/BLK WIRE MPX MPX-B FUSE PNK/BLU WIRE PPL PPL/BLU WIRE PPL/YEL WIRE PWR-IG FUSE RADIO 2 FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE SIG CPUB GRD SIG RCO RDA TAIL HEAD TAIL AUTO OFF OFF WHT/BLK WIRE WIPER/ WASHER SYSTEM (HEADLIGHT CLEANER SWITCH) WIRELESS DOOR LOCK CONTROL ECU (BEHIND RIGHT SIDE OF DASH) YEL WIRE

BLK WIRE BLK/RED WIRE BLU/ORG WIRE CENTER JUNCTION BLOCK (BEHIND INSTRUMENT CLUSTER) COMBINATION METER DAYTIME RUNNING LIGHT RELAY 3, 4 (AT RIGHT FRONT CORNER OF ENGINE COMPT) DRIVER SIDE JUNCTION BLOCK (BEHIND LEFT KICK PANEL) DRL 2 RELAY DRL FUSE ECU-B FUSE ECU-IG FUSE FOG LIGHT RELAY FR FOG FUSE FUSIBLE LINK BLOCK (ON LEFT SIDE OF ENGINE COMPT, FORWARD OF STRUT TOWER) GRN/RED WIRE H-LP L LWR FUSE H-LP L UPR FUSE H-LP R UPR FUSE H-LP R LWR FUSE HEAD LP RELAY HI BEAM INDIC HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT PANEL JUNCTION BLOCK (AT REAR OF PARKING BRAKE RELEASE LEVER) JUNCTION CONNECTOR J/C 6 (LEFT END OF DASH) JUNCTION CONNECTOR J/C 9 (RIGHT KICK PANEL) LEFT FOG LIGHT LEFT HIGH BEAM HEADLIGHT CONTROL ECU LEFT LOW, HI BEAM HEADLIGHT CONTROL ECU LT GRN WIRE MAIN DAYTIME RUNNING LIGHT RELAY (BEHIND RIGHT END OF DASH) MAIN FUSE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PNK WIRE PNK/GRN WIRE RED WIRE RED/ WHT WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FOG LIGHT RIGHT HIGH BEAM HEADLIGHT CONTROL ECU RIGHT LOW, HI BEAM HEADLIGHT CONTROL ECU STARTING/CHARGING SYSTEM WHT/BLK WIRE WHT/BLU WIRE