Print Page | Close Window

wiring diagram for a 2003 lexus es300

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=47810
Printed Date: July 18, 2025 at 9:40 PM


Topic: wiring diagram for a 2003 lexus es300

Posted By: belto
Subject: wiring diagram for a 2003 lexus es300
Date Posted: January 15, 2005 at 9:50 PM

I'M DOING A REMOTE START ALARM IN A 2003 ES300  LEXUS.......I CANT SEEM TO FIND THE TACH WIRE, AND HOOD PIN WIRE.  CAN ANYONE HELP ME?  THANX..




Replies:

Posted By: 3forty7
Date Posted: January 15, 2005 at 10:12 PM
12volts WHITE/ red  +  ignition harness
Starter BLACK/ white  +  ignition harness
Second Starter GREEN/ YELLOW  +  ignition harness
Ignition BLACK/ red  +  ignition harness
Second Ignition BLACK / YELLOW  +  ignition harness
Third Ignition N/A    
Accessory blue  +  front of fuse box
Second Accessory N/A    
Keysense blue  -  ignition harness
Notes: Using the status output wire from the remote start to trigger this wire will disarm the factory alarm without unlocking the doors.
Power Lock blue / YELLOW  -  driver door module in door
Power Unlock blue  -  driver door module in door
Notes: Unlock requires a double pulse.
Lock Motor blue/red  5wi driver kick, door harness
Unlock Motor blue/black  5wi driver kick, door harness
Parking Lights+ green  +  bottom of fuse box
Parking Lights- red  -  headlight switch
Hazards lt. GREEN/ black  -  hazard switch
Turn Signal(L) GREEN / WHITE  +  flasher relay in driver kick
Turn Signal(R) GREEN/ YELLOW  +  flasher relay in driver kick
Reverse Light RED / black  +  driver kick, harness to rear
Door Trigger   -  
Notes: The driver door trigger is RED / green at lower left of the fuse box. The passenger door is RED / green at upper left of the fuse box. The left rear door trigger is RED / white, and the right rear is RED / yellow, at the bottom of the fuse box. Use all four and diode isolate each.
Dome Supervision comes on with unlock    
Trunk/Hatch Pin green  -  DKP or light in trunk
Hood Pin black  -  theft ECU behind glove box
Trunk/Hatch Release WHITE/ blue  5wi driver kick panel
Notes: The fuel door release is RED / white (+) in the driver kick panel.
Power Sliding Door N/A    
Factory Alarm Arm arms with lock    
Factory Alarm Disarm disarms with unlock    
Disarm No Unlock use key sense    
Tachometer BLACK/ orange  ac  pin 5, 31 pin plug @ ECM
Notes: The ECM (Engine Control Module) is behind the glove box



Posted By: belto
Date Posted: January 15, 2005 at 10:26 PM
I THANK YOU VERY, VERY MUCH !!


Print Page | Close Window