Lexus SC I (1991-2001) (dash harn, left end of dash) Wiring diagrams

BLK WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE COMBINATION METER GRN/WHT WIRE HAZ-HORN FUSE HORN RELAY HOT AT ALL TIMES JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH LT GRN WIRE LUGGAGE COMPARMENT DOOR OPENER MOTOR (CENTER REAR OF TRUNK) LUGGAGE COMPARTMENT DOOR OPEN SWITCH LUGGAGE COMPARTMENT KEY UNLOCK SWITCH (RIGHT REAR OF TRUNK) PNK WIRE RED WIRE RED/WHT WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH THEFT DETERRENT HORN (LEFT REAR OF ENG COMPT) TRIP SWITCH, THEFT DETERRENT INDICATOR SWITCH UNLOCK WARNING SWITCH (IGNITION SWITCH) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 7 8 9 10 16 BATT +BM 5 11 12 PNK WIRE 5 6 23 TC STP CCS A/D A/T INDICATOR SWITCH ACCEL POSITION SENSOR (TOP CENTER OF ENGINE) BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRAIDED BRN WIRE CL- COMBINATION METER CRUISE CONTROL SWITCH CRUISE IND EFI FUSE EFI MAIN RELAY ENGINE CONTROL MODULE (BEHIND LOWER RIGHT SIDE OF DASH) ETCS FUSE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES IGN FUSE STOP FUSE HOT IN ON OR START GAUGE FUSE IGSW MREL +B J/B 3 (BEHIND CENTER OF DASH) JUNCTION BLOCK 1 LEFT SIDE OF ENGINE COMPRT.) M- M+ MAIN PNK WIRE PNK/BLK WIRE RED WIRE RED YEL/ WIRE RED/BLU WIRE RED/YEL WIRE RELAY BLOCK 2 RES+ SET/ COAST STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) THROTTLE CONTROL MOTOR (ON THROTTLE BODY) THROTTLE POSITION SENSOR (ON THROTTLE BODY) VC CL- VEHICLE SPEED SENSOR 2 (ON TRANSMISSION) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLK/RED WIRE BLU WIRE DRIVER'S SEAT HEATER (IN SEAT BACK) DRIVER'S SEAT HEATER (IN SEAT CUSHION) ECU-IG FUSE FRONT PASSENGER'S SEAT HEATER (IN SEAT BACK) FRONT PASSENGER'S SEAT HEATER (IN SEAT CUSHION) FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) FUSIBLE LINK GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGNITION MAIN RELAY JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) JUNCTION BLOCK 3 (BEHIND CENTER OF DASH) LEFT RED WIRE RELAY BLOCK 4 (BEHIND LEFT KICK PANEL, ON FRONT SIDE OF JUNCTION BLOCK) RIGHT SEAT HEATER SWITCH SEAT HTR FUSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 MHR MVR M+R +B HSRR VSRR 1 2 3 4 5 6 SWE SWRV SWB SWRH SWLH SWLV BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DOWN DRIVER'S POWER SEAT ECU (UNDER DRIVER'S SEAT) DRIVER'S POWER SEAT ECU SHIELD DRIVING POSITION MEMORY, RETURN SWITCH (LEFT SIDE OF DASH) DSW ECUE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES RAD 2 FUSE ECU-B FUSE HOT IN ACC OR ON JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT DOOR OPEN DETECTION SWITCH LEFT REMOTE CONTROL MIRROR LEFT RIGHT LEFT/ RIGHT UP/ DOWN LH SELECT SWITCH RH MHL MVL M+L GND MRY NCA WIRE OPERATION SWITCH PNK WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL MIRROR ECU (BEHIND LEFT CENTER OF DASH) REMOTE CONTROL MIRROR SWITCH RIGHT LEFT RIGHT REMOTE CONTROL MIRROR SET- TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) UP DOWN VC HSRL VSRL SI VIO WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 SO DSW 1 2 3 4 5 6 7 8 9 10 11 12 IG TEM+ TIM- +B ASW AUTO SW BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE DASH HARN, BEHIND COMBINATION METER) DOME FUSE DRIVER'S POWER SEAT ECU (UNDER DRIVER'S SEAT) DRIVER'S POWER SEAT ECU SHIELD DRIVING POSITION MEMORY, RETURN SWITCH (LEFT SIDE OF DASH) ECU-IG FUSE GAUGE FUSE GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT IN START OR RUN JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT DOOR LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH MANUAL SW MSW VC ECU-B NCA WIRE P (PKB) GND PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) REMOTE CONTROL MIRROR ECU (BEHIND LEFT CENTER OF DASH) SET- SI SO SSR- TELESCO LONG TELESCO SHORT TELESCOPIC CONTROL MOTOR TELESCOPIC POSITION SENSOR TELESCOPIC POSITION SENSOR (BEHIND LEFT SIDE OF DASH) TES TIS ECUE SO UWSW MRY TILT CONTROL MOTOR TILT DOWN TILT POSITION SENSOR TILT UP TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) TILT, POWER TELESCOPIC UNIT (COMBINATION SWITCH) TIM+ TEM- UNLOCK WARNING SWITCH (IGNITION SWITCH) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GND SLD+ RCL+ FRV+ +B STOP IG 1 2 3 8 9 11 12 SI DSW BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU RED/ WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE DOOR FUSE DOWN DRIVER'S FRONT VERTICAL MOTOR (UNDER SEAT) DRIVER'S POWER SEAT CONTROL SWITCH DRIVER'S REAR VERTICAL MOTOR (UNDER SEAT) DRIVER'S SLIDE CONTROL MOTOR (UNDER SEAT) DRIVING POSITION MEMORY, RETURN SWITCH ECU-IG FUSE ECUE SO MRY FRONT FRONT VERTICAL GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN START OR ON JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT DOOR OPEN DETECTION SWITCH LT GRN WIRE LT GRN/RED WIRE LUMBAR SUPPORT LUMBAR SUPPORT MOTOR (UNDER LEFT SEAT) NCA WIRE PNK WIRE POWER SEAT ECU (UNDER DRIVER'S SEAT) REAR RECLINING RED WIRE RED/BLK WIRE SET- SHIELD SLD- RCL- FRV- RRV- RRV+ SLIDE SSRR SSRV SSRS SO SSR- STOP FUSE STOPLIGHT SWITCH (ON BRACKET, ABOVE BRAKE PEDAL) TILT, POWER TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) VERTICAL REAR VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE YEL GRN/ WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLU WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE COMBINATION METER GRN/WHT WIRE HAZ-HORN FUSE HORN RELAY HOT AT ALL TIMES JUNCTION BLOCK 1 (BEHIND LEFT KICK PANEL) LEFT LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH LT GRN WIRE LUGGAGE COMPARMENT DOOR OPENER MOTOR (CENTER REAR OF TRUNK) LUGGAGE COMPARTMENT DOOR OPEN SWITCH LUGGAGE COMPARTMENT KEY UNLOCK SWITCH (RIGHT REAR OF TRUNK) PNK WIRE RED WIRE RED/WHT WIRE RELAY BLOCK 2 (ON LEFT SIDE OF ENGINE COMPT, BEHIND BATTERY) RIGHT LOCK/ UNLOCK MOTOR, DOOR DETECTION POSITION SWITCH THEFT DETERRENT HORN (LEFT REAR OF ENG COMPT) TRIP SWITCH, THEFT DETERRENT INDICATOR SWITCH UNLOCK WARNING SWITCH (IGNITION SWITCH) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE