2004 BMW X3 Alarm/Remote Start Wiring
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=99180
Printed Date: May 14, 2025 at 10:46 PM
Topic: 2004 BMW X3 Alarm/Remote Start Wiring
Posted By: sotoflex
Subject: 2004 BMW X3 Alarm/Remote Start Wiring
Date Posted: November 20, 2007 at 7:51 AM
hello all, can anyone help me out with the wiring diagram for the 04 x3, im installing alarm with remote start.. thanks
Replies:
Posted By: Twelvoltz
Date Posted: November 20, 2007 at 9:23 AM
Audiovox lists:
#505373: 2004 BMW X3 4DR SUV WITH STANDARD AUDIO SYSTEM
Audio/Mobile Video
WIRE COLOR POLARITY LOCATION
Battery VIOLET/WHITE (+) RADIO HARNESS
Accesory RED / GREEN (+) RADIO HARNESS
Ground BROWN (-) RADIO HARNESS
LF Speaker (+) GREEN/ RED
LF Speaker (-) GREEN/ BROWN
RF Speaker (+) BLUE/RED
RF Speaker (-) BLUE/BROWN
LR Speaker (+) YELLOW/BLACK
LR Speaker (-) YELLOW/BROWN
RR Speaker (+) YELLOW/VIOLET
RR Speaker (-) YELLOW/GRAY
Steering Cntrls OPTIONAL
Speed Cntrl YES
Radio Security YES
Security
WIRE COLOR POLARITY LOCATION
Battery RED / BLUE AND RED / GREEN (+) IGNITION SWITCH HARNESS
Ignition 1 GREEN (+) IGNITION SWITCH HARNESS
Starter 1 BLACK/ BLUE (+) IGNITION SWITCH HARNESS
All Door Trigger RED / BLUE (+) AT COURTESY LIGHT UNDER DASH OR GOTO DOMELIGHT
Alarm Disarm DISARMS WITH UNLOCK
Alarm Arm ARMS WITH LOCK
Convenience
WIRE COLOR POLARITY LOCATION
Please select another category
Remote Start
WIRE COLOR POLARITY LOCATION
Battery RED / BLUE AND RED / GREEN (+) IGNITION SWITCH HARNESS
Ignition 1 GREEN (+) IGNITION SWITCH HARNESS
Ignition 2 PURPLE
Starter 1 BLACK/ BLUE (+) IGNITION SWITCH HARNESS
Anti-Theft Type TRANSPONDER
Anti-Theft Descript THE KEY SENDS AN RF SIGNAL TO THE BCM MODULE THROUGH AN ANTENNA LOCATED AROUND THE IGNITION CYLINDER
Tachometer BLACK/ ORANGE (AC) IN HARNESS NEXT TO HOOD SWITCH UNDER HOOD
Brake Lights BROWN / GRAY (+) BRAKE SWITCH
Modules
WIRE LOCATION
Please select another category
Doorlocks/Windows
WIRE COLOR POLARITY LOCATION
Power Unlock BROWN / YELLOW (-) MODULE BEHIND GLOVEBOX
PowerLock WHITE/ BLACK (-) MODULE BEHIND GLOVEBOX
Note: Audiovox makes no representation or warranty with respect to the above information including its accuracy, completeness, or its freedom from third parties' proprietary rights. Audiovox disclaims all liability or responsibility for errors or omissions therein or any decision made by the recipient in reliance thereon. The installer must verify any circuitry with the proper test equipment prior to installation.
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Installer, IT support, and FFL. I need less hobbies.
Posted By: sotoflex
Date Posted: November 20, 2007 at 12:43 PM
thank you very much!!!!!!
Posted By: howie ll
Date Posted: November 20, 2007 at 2:23 PM
Twelvoltz, sorry about this but if you look very carefully, on the audio side battery and acc are wrong way round, also unlock wire might be blue/red, if it follows E46 3 series, trunk feed should be in driver's floor loom and it's BROWN / white neg, NB blocking diodes required on trunk light(s), place on RED / yellow power feeds, bar towards light unit, trunk release if there is one is grey/green + Brake light DO NOT USE SWITCH IT'S CAN!! Blue/black and GREEN/ black in floor looms both sides carry 12v+ to the brake lights, also tach is a thin black lead on the OBD II socket under dash. Lastly as a convenience point, all of these except one of the brake light feeds are in the driver's floor loom, even the lock/unlocks come out of the driver's door and join this loom, thus everything can be centered around driver under dash area. Hood switch if factory installed is PURPLE / green. Extend lock pulse to close windows and roof, use a DEI 556U for the bypass and place only the "valet" or "purse" key in it.
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