Question: Where can I find a 2004 BMW 325i radio wiring diagram? What are the 2004 BMW 325i radio wiring harness colors?
If you’re looking to change the radio in your 2004 BMW 325i or troubleshoot why your car radio stopped working, we’re here to help!
Our comprehensive 2004 BMW 325i radio wiring diagram shows you all the radio wire harness colors, car speaker wiring colors and car speaker sizes. Use our 2004 BMW 325i stereo wiring guide to help you with your car radio and installation needs.
In This Guide
2004 BMW 325i Radio Wiring Diagram
This 2004 BMW 325i radio wiring chart shows you all the 2004 BMW 325i radio wire colors and their functions. Utilize this guide to help you with a car radio install or help with a car radio troubleshoot. 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.
Application | Radio Wire Color |
---|---|
Car Radio Battery Wire (Constant Power 12v+) | Red/White |
Car Radio Accessory Wire (Switched Power 12v+) | Purple/White |
Car Radio Ground Wire | Brown |
Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install! | |
Car Radio Illumination Wire | N/A |
Car Stereo Dimmer Wire | N/A |
Car Radio Antenna Trigger Wire | White |
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 |
Car Radio Amplifier Location | N/A |
Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio. |
2004 BMW 325i Speaker Wiring Guide
This 2004 BMW 325i speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 2004 BMW 325i speaker wiring guide to help you with a speaker replacement or speaker upgrade. If the car speaker wiring information you’re searching for is not listed, please don’t hesitate to ask for it at the bottom of this page.
Application | Speaker Wire Color |
---|---|
Front Center Speaker Positive Wire (+) | N/A |
Front Center Speaker Negative Wire (-) | N/A |
Upgrade your Center Speakers for awesome sound! | |
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 |
Upgrade your Tweeters for cleaner audio highs! | |
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 |
Use a Speaker Wire Harness for easy Speaker Installation! | |
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 |
Upgrade your Tweeters for cleaner audio highs! | |
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 |
Upgrade your Subwoofer for deeper lows! | |
Subwoofer Positive Wire (+) | N/A |
Subwoofer Negative Wire (-) | N/A |
2004 BMW 325i Speaker Sizes and Location
This 2004 BMW 325i speaker size chart shows your speaker measurements and speaker locations. Use this chart to see what speaker fits in your 2004 BMW 325i.
Application | Speaker Size and Location |
---|---|
Front Center Speaker Size | N/A |
Front Center Speaker Depth | N/A |
Front Center Speaker Location | N/A |
Upgrade your Center Speakers for awesome sound! | |
Front Tweeter Size | 1″ Tweeters |
Front Tweeter Depth | N/A |
Front Tweeter Location | Front Doors |
Upgrade your Tweeters for cleaner audio highs! | |
Front Speaker Size | 6.5″ Speakers |
Front Speaker Depth | 2″ Depth |
Front Speaker Location | Front Doors |
Use a Speaker Wire Harness for easy Speaker Installation! | |
Rear Tweeter Size | N/A |
Rear Tweeter Depth | N/A |
Rear Tweeter Location | N/A |
Use a Speaker Wire Harness for easy Speaker Installation! | |
Rear Speakers Size | 6.5″ Speakers |
Rear Speaker Depth | 4″ Depth |
Rear Speaker Location | Rear Deck |
Upgrade your Subwoofer for deeper lows! | |
Car Subwoofer Speaker Size | N/A |
Car Subwoofer Speaker Depth | N/A |
Car Subwoofer Speaker Location | N/A |
Questions and Answers
If you have any questions about your 2004 BMW 325i 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 2004 BMW 325i 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!
2 thoughts on “2004 BMW 325i Radio Wiring Diagram”
Donald, first double check ALL your fuses and make sure ALL your fuses are good. You can do this by using an Automotive Fuse Tester and making sure all of your fuses are not blown. If all of your fuses are good, your 2004 BMW 325i may have a factory amp that needs to be turned on by your after market radio. The car radio amplifier trigger wire has to be wired up to turn on your factory amplifier to output sound from your speakers. Double check that your 2004 BMW 325i amp turn on wire is connected. Hope this helps. Good luck with your 2004 BMW 325i stereo installation.
thanks for the wire diagram. I used a wiring harness but after splices each wire according to the colors i am still not getting any sound. I referred to your diagram to confirm that the colors were correct (which the are) but still no sound. When i connect the original BMW head unit sounds works no problem. Any idea what i could be missing. In addition to the 13 pinned wires there is a small separate connection of 3 wires (white/blue, white/orange, and white/brown) that do not tie into the harness. Do you know what these wires are for? Thanks in advance, Donald Costa.