2003 BMW Z4 - Need wiring info

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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=66769
Printed Date: May 01, 2025 at 8:54 PM

Topic: 2003 BMW Z4 - Need wiring info

Posted By: kaweahnet
Subject: 2003 BMW Z4 - Need wiring info
Date Posted: November 21, 2005 at 6:01 PM

Hello there,

Does anybody have the wiring information (alarm and/or stereo) for the 2003 BMW Z4 with the HK "Business CD" stereo?

Thanks ahead of time!

-Dave

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David Killion
BMW Fanatic!

Replies:

Posted By: drvnbysound
Date Posted: November 21, 2005 at 6:09 PM

I have not yet worked on one of these.. This is the only information I have on the car at this time..

Constant 12V - RED / Grn. & RED / Blue - Ignition Switch Harness
Ignition 12V - Green - Ignition Switch Harness
Starter - BLACK/ Blue - Ignition Switch Harness
Parking Lamp - Gray / YELLOW - At Switch
Power Lock - Yellow/Red (-) Same As Unlock
Power Unlock - Yellow/Red(-) Same As Lock

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