Updated: 06/26/2024 • Published: 10/31/2007
The Modified Life staff has put their heads together to create an invaluable resource containing car alarm wiring diagram, remote car starter wiring diagram, car wiring diagram and car security wiring diagram. Feel free to use any car alarm wiring diagram or remote car starter wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most diagrams listed on our site are submitted by our Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2000 Lexus RX300. If you can’t find your car alarm wiring diagram or remote start wire diagram on Modified Life, please feel free to post a car wiring diagram request (Car Alarm Wiring Diagram Request Page) and we’ll do our best to find you the information you need for your mobile installation. If you would like to help the Modified Life community by adding a car alarm wiring diagram or auto alarm wiring diagram to our resource, please feel free to email us using our contact form. 2000 Lexus RX300 Car Alarm Wiring Diagram Information Constant 12V+ Wire: White/Blue Starter Wire (+): Black/White Second Starter Wire (+): N/A Ignition Wire (+): Black/Yellow Second Ignition Wire: Black Accessory Wire: Pink Second Accessory Wire: N/A Key Sense Wire (+): N/A Tachometer Wire: Orange Door Lock Wire (-): Pink Door Unlock Wire (-): Pink/Blue & Gray Door Trigger Wire (-): Red/White Dome Supervision Wire: Same as door trigger. Headlights Wire (-): Red/Blue Parking Light Positive Wire (+): Green Parking Light Negative Wire (-): Green/Red Trunk/Hatch Pin Wire (-): White/Red Hood Pin Wire (-): Red/Blue Trunk/Hatch Release Wire (+): N/A Factory Alarm Arm Wire: Arms with Lock. Factory Alarm Disarm Wire (-): Disarms with Unlock. Factory Alarm Disarm but No Unlock Wire (-): Blue/Silver Dots Horn Trigger Wire (-): White/Red Brake Wire (+): Green/White Emergency Parking Brake Wire (-): N/A
Whether your an expert installer or a novice enthusiast with a 2000 Lexus RX300, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car alarm, remote car starter, car security system or any mobile electronics is identifying the correct wires for a 2000 Lexus RX300.
Constant 12V+ Wire Location: Ignition Switch Large Harness
Starter Wire Location: Ignition Switch Harness
Start Wire Location: N/A
Ignition Wire Location: Ignition Switch Harness
Second Ignition Wire Location: Ignition Switch Harness
Accessory Wire Location: Ignition Switch Harness
Accessory Wire Location: N/A
Key Sense Location: N/A
Tachometer Wire Location: Right of the Fuse Box in a 10-pin plug.
Door Lock Wire Location: Harness between module and door actuator.
Door Unlock Wire Location: In Passenger’s Door.
Door Trigger Wire Location: Left of steering black 13 Pin connector position 2.
Dome Supervision Wire Location: N/A
Headlights Wire Location: Steering Column
Parking Light Positive Wire Location: Drivers Kick Panel. This wire goes to the key cylinder illumination ring and reads the delay.
Parking Light Negative Wire Location: Steering Column
Trunk/Hatch Pin Wire Location: Drivers Kick Panel. Located in a 20-pin plug, low in the kick panel. Test only with a digital multi-meter as some of the multiplex wires in the car are white/red.
Hood Pin Wire Location: In the engine compartment, under the relay box on the drivers side in a gray 17-pin plug, pin #1.
Trunk/Hatch Release Wire Location: N/A
Factory Alarm Arm Wire Location: N/A
Factory Alarm Disarm Wire Location: N/A
Factory Alarm Disarm Wire Location: Steering Column. This is the ignition key sense wire. Using the status output wire from the remote start to ground.
Horn Trigger Wire Location: Steering Column
Brake Wire Location: Brake Pedal Switch
Emergency Parking Brake Wire Location: N/A