Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 1998-1999 Lexus RX300 . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections. More information on using a multimeter and testing wires please see our Technical Support Area.
PART
COLOR
LOCATION
12 VOLT
CONSTANT
WHITE/BLUE (+)
IGNITION SWITCH HARNESS
STARTER
BLACK/WHITE (+)
IGNITION SWITCH HARNESS
STARTER
2
N/A
IGNITION
1
BLACK/YELLOW (+)
IGNITION SWITCH HARNESS
IGNITION
2
BLACK (+)
IGNITION SWITCH HARNESS
IGNITION
3
N/A
ACCESSORY/HEATER
BLOWER 1
PINK (+)
IGNITION SWITCH HARNESS
ACCESSORY/HEATER
BLOWER 2
N/A
KEYSENSE
BLUE with SILVER Dots (-)
IGNITION SWITCH HARNESS
PARKING
LIGHTS ( - )
GREEN/RED (-)
@ STEERING COLUMN HARNESS
PARKING
LIGHTS ( + )
GREEN (+)
IN DRIVERS KICK PANEL, GRAY 15-PIN PLUG
POWER LOCK
See NOTE *1
See DIAGRAM
POWER UNLOCK
See NOTE *1
See DIAGRAM
DOOR TRIGGER
RED/WHITE (-) See NOTE *2
@ STEERING COLUMN HARNESS
DOMELIGHT
SUPERVISION
USE DOOR TRIGGER, Requires Part #775 Relay
TRUNK RELEASE
N/A
SLIDING
POWER DOOR
N/A
HORN
WHITE/RED (-)
@ STEERING COLUMN HARNESS
TACH
ORANGE
IN 10-PIN PLUG, RIGHT OF FUSEBOX
WAIT TO
START LIGHT
N/A
BRAKE
GREEN/WHITE (+)
@ SWITCH ABOVE BRAKE PEDAL
FACTORY
ALARM DISARM
Disarms with KEYSENSE Wire
@ IGNITION SWITCH HARNESS
ANTI-THEFT
TRANSPONDER ANTI-THEFT SYSTEM, REQUIRES 791 BYPASS MODULE AND EXTRA IGNITION KEY
TRANSPONDER @ IGNITION SWITCH TUMBLER
EXTRA
INFORMATION
NOTE *1 THIS VEHICLE'S DOORLOCKS ARE SPECIAL AND WILL REQUIRE AN EXTRA RELAY, PART #775 AND 2 DIODES, TO CONNECT, See DIAGRAM
NOTE *2 THIS DOOR TRIGGER WIRE GOES TO THE KEY CYLINDER ILLUMINATION RING AND READS THE DELAY.