Lexus RX I (1997-2003) instrument panel j/b (behind left side of dash) Wiring diagrams

12 13 12 5 MPX- MPX+ 15 16 17 RCO RDA RSSI 2 9 11 BECU 4 5 10 11 14 17 18 21 23 25 CYL SIG 5 10 BCTY ILE BDR CTY CPUB CTYB CTYE GND BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BSUB IG COMBINATION METER ECU CTY SIG BDR CPUB CTYE GND D RR DOOR FUSE DRIVER DOOR ECU (IN LEFT FRONT DOOR) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 3, J/C 4 (LEFT KICK PANEL) J/C 5 (TOP OF LEFT KICK PANEL) J/C 9 (RIGHT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT LEFT FRONT DOOR COURTESY SWITCH LEFT REAR DOOR COURTESY SWITCH LEFT REAR DOOR ECU (IN LEFT REAR DOOR LT GRN WIRE OPEN DOOR INDICATOR P FR DOOR FUSE P RR DOOR FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY LIGHT RIGHT FRONT DOOR COURTESY SWITCH SOLID STATE VCC CODE SQ VIO WIRE W/ NAV W/O NAV WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE WIRELESS DOOR LOCK ECU (IN CENTER OF VEHICLE) YEL WIRE YEL/BLK WIRE YEL/RED WIRE

BACK DOOR COURTESY SWITCH BLK WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE CTY SIG BDR CPUB CTYE DOME FUSE DOOR ECU-B FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE FRONT INTERIOR LIGHT GARAGE DOOR OPENER (IF EQUIPPED) GRN/BLK WIRE HOT AT ALL TIMES IGNITION KEY CYLINDER LIGHT INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 14 (IN LEFT SIDE OF LIFTGATE) J/C 3, J/C 4 (LEFT KICK PANEL) J/C 5 (TOP OF LEFT KICK PANEL) LEFT VANITY LIGHT OFF PERSONAL LIGHT REAR INTERIOR LIGHT REAR INTERIOR LIGHT DIODE (IN REAR CENTER OF ROOF) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR DOOR COURTESY SWITCH RIGHT REAR DOOR ECU (IN RIGHT REAR DOOR) RIGHT VANITY LIGHT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL/RED WIRE

1 2 3 4 CLTB 2 12 14 15 16 BECU HRLY DRL HEAD TAIL 21 17 MPX+ MPX- 5 6 7 9 12 20 21 IG FFGO TRLY CLTE CLTB 8 19 20 KSW PKB HF AUTOMATIC LIGHT CONTROL SENSOR BDR CTY CPUB CTYE GND BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN/WHT WIRE CLTE CLTS CLTS COMBINATION METER ECU COMBINATION SWITCH DIMMER SWITCH DRIVER DOOR ECU (IN LEFT FRONT DOOR) ECU-B FUSE DOME FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) F/L DOOR FUSE FOGLIGHT SWITCH GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE H-LP L LWR FUSE H-LP R LWR FUSE HEADLAMP RELAY HIGH HIGH FLASH FLASH LOW LOW HIGH LOW FLASH HOT AT ALL TIMES HU FFOG INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 2 (IN LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) J/C 5 (TOP OF LEFT KICK PANEL) J/C 7 (UPPER LEFT END OF DASH) J/C 9 (BEHIND RIGHT KICK PANEL) LEFT FRONT DOOR COURTESY SWITCH LEFT LOW BEAM HEADLIGHT LIGHT CONTROL SWITCH LT GRN WIRE LT GRN/RED WIRE MAIN FUSE MPX OFF PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT LOW BEAM HEADLIGHT TAIL HEAD OFF AUTO UNLOCK WARNING SWITCH W/ HID W/O HID W/O HID W/ HID WHT WIRE WHT/BLK WIRE YEL/BLK WIRE YEL/RED WIRE

BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CANADIAN MODELS COMBINATION METER ECU DAYTIME RUNNING LIGHT RESISTOR (ON LEFT FRONT OF ENGINE COMPARTMENT) DRL 2 RELAY DRL 3 RELAY DRL 4 RELAY DRL FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FOG LIGHT RELAY FR FOG FUSE TAIL FUSE GAUGE FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE H-LP L UPR FUSE H-LP R UPR FUSE HEAD (USA) INDICATOR HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 2 (IN LEFT FRONT OF ENGINE COMPARTMENT, BEHIND HEADLIGHT) J/C 4 (LEFT KICK PANEL) LEFT FRONT FOG LIGHT LEFT HEADLIGHT ECU (BEHIND LEFT HEADLIGHT) (W/ HID) LEFT HIGH BEAM HEADLIGHT (W/O HID) LT GRN WIRE LT GRN/RED WIRE PARKING BRAKE SWITCH R/B 2 R/B 3 (ON FRONT CENTER OF ENGINE COMPARTMENT, ON RADIATOR SUPPORT) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ECU (BEHIND RIGHT HEADLIGHT) (W/ HID) RIGHT HIGH BEAM HEADLIGHT (W/O HID) SHORT CONNECTOR (ON LEFT FRONT OF ENGINE COMPARTMENT) SOLID STATE TAILLIGHT RELAY US MODELS W/ HID W/O HID W/O HID (ENGINE HARNESS, LEFT SIDE OF ENGINE) WHT WIRE WHT/BLK WIRE YEL WIRE

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE CHG- RHG RH+ RHT RH- RHE IG COMBINATION METER ECU-IG FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPT) GENERATOR GRN/BLK WIRE GRN/YEL WIRE GRY/YEL WIRE HEAD- LAMP RELAY HEADLIGHT BEAM LEVEL CNTRL WARNING LIGHT HEADLIGHT BEAM LEVEL CONTROL ECU (BEHIND LEFT END OF DASH) HEATER FUSE HEIGHT CONTROL SENSOR (UNDER REAR OF VEHICLE) HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 4 (BEHIND LEFT KICK PANEL) J/C 9 (BEHIND RIGHT KICK PANEL) LEFT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR MAIN FUSE PNK SGR WIRE PNK WIRE PNK/BLK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT BEAM LEVEL CONTROL ACTUATOR SBR WNG LHG LH+ LHT LH- LHE SPDL SPDN VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/GRN WIRE

2 INDICATOR 5 12 PI SPD A/T OIL TEMP INDICATOR ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU/WHT WIRE BRAKE INDICATOR BRN WIRE BRN/WHT WIRE COMBINATION METER ECU CRUISE CONTROL ECU (BEHIND LEFT SIDE OF DASH) CRUISE CONTROL, ENGINE CONTROL, NAVIGATION SYSTEMS DATA LINK CONNECTOR (DLC) 3 (PARTIAL) (UNDER LEFT SIDE OF DASH) DRIVER DOOR ECU (IN LEFT FRONT DOOR) ECT SNOW INDICATOR ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM FUEL GAUGE FUEL INDICATOR FUEL SENDER (MAIN) (ON TOP OF FUEL TANK) FUEL SENDER (SUB) (UNDER CENTER OF VEHICLE) GRN WIRE GRN/BLK WIRE GRN/YEL WIRE GRY/BLU WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM ANTI-LOCK BRAKES SYSTEM HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INDICATOR INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) LEFT TURN INDICATOR LIGHT FAILURE SENSOR (IN LEFT SIDE OF LUGGAGE COMPARTMENT) LT GRN/BLK WIRE LT GRN/RED WIRE MPX ODLP ODNS OIL INDICATOR ORG/ WIRE PNK WIRE REAR LIGHTS INDICATOR RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT TURN INDICATOR SEAT BELT INDICATOR SOLID STATE SPEEDOMETER SRS-B FUSE SUPPLEMENTAL RESTRAINTS SYSTEM TACHOMETER TO COMBINATION METER ECU (DIAGRAM 2 OF 2) VIO/WHT WIRE WATER TEMP GAUGE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED (OR YEL/BLK) WIRE YEL/RED WIRE

ABS INDICATOR AUTO LEVELING INDICATOR BLK WIRE BLK/RED WIRE BLU WIRE BLU/WHT WIRE BRAKE INDICATOR BRN/WHT WIRE BUZZER CHARGE INDICATOR COMBINATION METER ECU CRUISE INDICATOR DOME FUSE ECU-B FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FROM COMBINATION METER ECU (DIAGRAM 1 OF 2) GRY/BLU WIRE H-LP R LWR FUSE HEAD INDICATOR HIGH BEAM INDICATOR HOT AT ALL TIMES HOT W/COMBINATION SWITCH IN HEAD POSITION, DIMMER SWITCH IN HIGH OR FLASH INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 1 (IN ENGINE COMPARTMENT, ON RIGHT FRONT FENDER) J/C 4 (LEFT KICK PANEL) LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP O/D MAIN SWITCH O/D OFF INDICATOR ODO/TRIP OPEN DOOR INDICATOR RED WIRE RED/BLK WIRE RHEOSTAT SOLID STATE SLIP INDICATOR SRS INDICATOR TAIL INDICATOR TC TAIL CANCEL TRAC OFF INDICATOR WASHER WASHER LEVEL WARNING SWITCH (IN RIGHT FRONT CORNER OF ENGINE COMPARTMENT) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

12 22 ILL- 6 7 10 14 TR ILL+ ET TC 8 4 (W/ NAV) (W/O NAV) ASHTRAY ILLUMINATION BLK WIRE BLK/RED WIRE BODY ECU (BEHIND LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CIGARETTE LIGHTER ILLUMINATION COMBINATION METER ECU ELECTRONIC CONTROLLED TRANSMISSION PATTERN SELECT SWITCH GLOVE BOX LIGHT GRN WIRE GRN/RED WIRE GRN/WHT WIRE HAZARD SWITCH HEAD OFF HOT AT ALL TIMES INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 9 (BEHIND RIGHT KICK PANEL) LIGHT CONTROL SWITCH (PART OF COMBINATION SWITCH) LT GRN WIRE LT GRN/BLK WIRE O/D MAIN SWITCH PANEL FUSE RADIO, PLAYER (W/ NAV) RED WIRE RHEOSTAT SEAT HEATER SWITCH (DRIVER) SEAT HEATER SWITCH (PASSENGER) TAIL TAILLIGHT RELAY TC TAIL CANCEL TRACTION CUT SWITCH WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 RCL- RCL+ SLD- SLD+ LFT- LFT+ GND +B FRV- FRV+ 1 2 3 4 5 6 7 8 9 PNK WIRE BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DOME FUSE ECU-IG FUSE ENGINE ROOM J/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FRONT FRONT PASSENGER'S SEAT POWER SEAT CONTROL SWITCH GRN/BLK WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/C 15 (IN LEFT SIDE OF CARGO AREA) J/C 17 (UNDER DRIVER'S SEAT) J/C 18 (UNDER PASSENGER'S SEAT) J/C 3 J/C 4 JUNCTION CONNECTOR (LEFT KICK PANEL) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MMRY SGND SSRS SLDF SLDR LUP LDWN FUP ORG/ WIRE PNK WIRE PNK/BLK WIRE POWER FUSE POWER SEAT ECU (UNDER DRIVER'S SEAT) POWER SEAT MOTOR (DRIVER'S SEAT FRONT VERTICAL CONTROL) POWER SEAT MOTOR (DRIVER'S SEAT REAR VERTICAL CONTROL) POWER SEAT MOTOR (DRIVER'S SEAT RECLINING CONTROL) POWER SEAT MOTOR (DRIVER'S SEAT SLIDE CONTROL) POWER SEAT MOTOR (FRONT PASSENGER'S SEAT RECLINING CONTROL) POWER SEAT MOTOR (FRONT PASSENGER'S SEAT SLIDE CONTROL) RCLF RCLR REAR RECLINING RED WIRE SEAT MEMORY SWITCH SET- SLIDE SSFV SSRL SSRR PVCC FDWN IG SYSB VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRAIDED BRAIDED VG BRN WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM (DATA LINK CONNECTOR) CRUISE CONTROL ECU (BEHIND LEFT SIDE OF DASH) SPD SPD ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) DOME FUSE EXTERIOR LIGHTS SYSTEM (BACK-UP LIGHT SWITCH) GAUGE FUSE GRN WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN START OR RUN HOT W/TAILLIGHT RELAY ENERGIZED INSTRUMENT CONTROL PANEL INSTRUMENT PANEL J/B (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND UPPER CENTER OF DASH) J/B 5 (BEHIND UPPER LEFT SIDE OF DASH) J/C 12 (UNDER REAR SEAT) J/C 3, J/C 4 (BEHIND LEFT KICK PANEL) J/C 3, J/C 4 (BENIND LEFT KICK PANEL) MULTI-DISPLAY NAVIGATION ECU (AT RIGHT REAR CORNER OF LUGGAGE COMPT) PANEL FUSE PARKING BRAKE SWITCH PKB TC PNK WIRE PNK/BLK WIRE RADIO 2 FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SOUND SYSTEMS SOUND SYSTEMS SOUND SYSTEMS SYNC TAIL VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE