Question: Where can I find a 1987 BMW 325 radio wiring diagram? What are the 1987 BMW 325 radio wiring harness color codes?
If you’re planning to upgrade the radio in your 1987 BMW 325 or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 1987 BMW 325 radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 1987 BMW 325.
In This Guide
1987 BMW 325 Car Stereo Wiring Diagram
This 1987 BMW 325 radio wiring chart shows you all the 1987 BMW 325 stereo wire color codes and their radio wire functions. This easy-to-follow guide can help you install a new car stereo or figure out problems with your stereo wiring harness and radio setup. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Battery Constant Power Wire (12v+) | Red/White |
| Accessory Switched Power Wire (12v+) | Purple/White |
| Ground Wire | Brown |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | N/A |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| Car Radio Speaker Amplifier Turn-On Trigger Wire | N/A |
| Car Radio Subwoofer Amp Turn-On Trigger Wire | N/A |
| Car Radio Mute Wire | N/A |
| Amplifier Location | N/A |
1987 BMW 325 Speaker Wiring Guide
This 1987 BMW 325 speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 1987 BMW 325 chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (-) | N/A |
| Front Left Tweeter Positive Wire (+) | N/A |
| Front Left Tweeter Negative Wire (-) | N/A |
| Front Right Tweeter Positive Wire (+) | N/A |
| Front Right Tweeter Negative Wire (-) | N/A |
| Front Left Speaker Positive Wire (+) | Yellow/Red |
| Front Left Speaker Negative Wire (-) | Brown/Orange |
| Front Right Speaker Positive Wire (+) | Black/Red |
| Front Right Speaker Negative Wire (-) | Brown/Orange |
| Rear Left Tweeter Positive Wire (+) | N/A |
| Rear Left Tweeter Negative Wire (-) | N/A |
| Rear Right Tweeter Positive Wire (+) | N/A |
| Rear Right Tweeter Negative Wire (-) | N/A |
| Rear Left Speaker Positive Wire (+) | Yellow/Black |
| Rear Left Speaker Negative Wire (-) | Black/Orange |
| Rear Right Speaker Positive Wire (+) | Blue/Black |
| Rear Right Speaker Negative Wire (-) | Brown/Orange |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
1987 BMW 325 Speaker Sizes and Locations
This 1987 BMW 325 speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 1987 BMW 325.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 5.25″ Speakers |
| Front Speaker Depth | 3″ Depth |
| Front Speaker Location | Front Kick Panels |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speakers Size | 5.25″ Speakers |
| Rear Speaker Depth | 3″ Depth |
| Rear Speaker Location | Rear Deck |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 1987 BMW 325 radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!
Contribute
Do you want to contribute 1987 BMW 325 stereo wire diagram information to benefit the Modified Life community? Feel free to share your insights by posting at the bottom of this page. We will gather any additional information presented below by our community, verify it, and incorporate it into the car radio wiring guide above for easy reference. We are consistently adding new information to improve and update this car stereo wiring guide as it becomes available. We appreciate your contribution in advance!
5 thoughts on “1987 BMW 325 Car Stereo Wiring Diagram”
Hey guys, can i get help in fixing my car radio, it demands me to put in a code but i dont no how too. So can some on show me how to please?
Ayonio, if you do not have the radio unlock code, you would have to obtain it from your local BMW dealer. Hope this helps. Good luck.
Help guys, i got a 1987 BMW, just change battery and i have the radio code, can you tell me step by step, how to enter the code, the manual i got do not tell me. i already try enter the number with the key pad, in the pass i believe i turn the ignition to 1 or 2, the rest i do not remember. thank you.
For 1987 BMW 325 with an amplifier, you only have two speaker wires due to a common ground system. B+ is correct along with ground. Left positive front and rear is the yellow wire with a plug on it. Right positive is the blue wire with plug on it. Do not wire any negatives for speakers coming out of radio. Use rear outputs, Green and Purple, off of the radio (POSITIVES). Dont forget to use solid blue, B+ constant for power antenna, This should be two light brown wires. You could however separate these two for amp turn on and antenna. Hope this helps. John
John, thanks for the 1987 BMW 325 stereo wiring information contribution!