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1990 bmw 525i help!

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=11713
Printed Date: July 13, 2025 at 1:40 PM


Topic: 1990 bmw 525i help!

Posted By: tyc00
Subject: 1990 bmw 525i help!
Date Posted: April 01, 2003 at 12:19 PM

I need the wiring info for my 525i. pls help ASAP

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one step at a time



Replies:

Posted By: Velocity Motors
Date Posted: April 01, 2003 at 12:22 PM

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|red                 |+  |steering column             |
|          STARTER|BLACK / YELLOW        |+  |steering column             |
|         IGNITION|green               |+  |steering column             |
|        ACCESSORY|purple              |+  |steering column             |
|       POWER LOCK|WHITE/ RED / yel dots  |+  |driver kick panel *1        |
|     POWER UNLOCK|blue/BROWN / yel dots |+  |driver kick panel *1        |
| PARKING LIGHTS +|gry/purple,gry/yel  |   |at light switch             |
|       HEADLIGHTS|yellow              |+  |at light switch             |
|     DOOR TRIGGER|br/gry,br/blu,br/ppl|-  |anti-theft module  *3       |
|  TRUNK/HATCH PIN|RED / white           |+  |harness to trunk            |
|       TACHOMETER|black               |   |at diagnostic conn. *2      |
|       BRAKE WIRE|blue/red            |+  |brake pedal switch          |

Notes:
*1 Do not operate locks by remote with doors open or deadbolted to prevent possible damage to servos.  *2 Round plug with screw-on cover at pass. shock tower or by fusebox on driver's side.  *3 Anti-theft plug or module located under rear seat on passenger side. Door wires also found at general module under rear seat on driver's side. Be careful handling this module, as rotating it can cause underseat grommets to suck out, allowing eventual water damage to the electrical system. Domelight supervision (combined) wire yellow/blue in large harness by general module (usually in front).



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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: tyc00
Date Posted: April 01, 2003 at 12:43 PM
can u pls give me the stereo wiring diagram

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one step at a time



Posted By: Velocity Motors
Date Posted: April 01, 2003 at 12:55 PM

Sorry, the BMW has an amplifier and I do not have the color codes for the amp.



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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: tyc00
Date Posted: April 02, 2003 at 2:37 PM
ty, if anyone passing thru has any info for me it would be greatly appreciated

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one step at a time


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