Question: Where can I find a 2003 Subaru Impreza radio wiring diagram? What are the 2003 Subaru Impreza radio wiring harness color codes?
If you’re planning to upgrade the radio in your 2003 Subaru Impreza or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 2003 Subaru Impreza 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 2003 Subaru Impreza.
In This Guide
2003 Subaru Impreza Car Stereo Wiring Diagram
This 2003 Subaru Impreza radio wiring chart shows you all the 2003 Subaru Impreza 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+) | Blue/Red |
| Accessory Switched Power Wire (12v+) | Yellow/Green |
| Ground Wire | Black |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Purple |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| Amplifier Turn-On Wire | N/A |
| Amplifier Mute Wire | N/A |
| Amplifier Location | N/A |
2003 Subaru Impreza Speaker Wiring Guide
This 2003 Subaru Impreza 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 2003 Subaru Impreza 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 (+) | Brown/White |
| Front Left Speaker Negative Wire (-) | Green |
| Front Right Speaker Positive Wire (+) | Red/Yellow |
| Front Right Speaker Negative Wire (-) | White/Black |
| 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 (+) | White/Red |
| Rear Left Speaker Negative Wire (-) | Red/Black |
| Rear Right Speaker Positive Wire (+) | Blue/Yellow |
| Rear Right Speaker Negative Wire (-) | Red/White |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
2003 Subaru Impreza Speaker Sizes and Locations
This 2003 Subaru Impreza speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 2003 Subaru Impreza.
| 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 | 6.5″ Speakers |
| Front Speaker Depth | 2″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 4″ Speakers |
| Rear Speaker Depth | 2″ 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 2003 Subaru Impreza 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
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4 thoughts on “2003 Subaru Impreza Stereo Wiring Diagram”
Could you tell me what the original speakers were for the 1993 subaru impreza wagon? I would also like to know the stats. There are 4 total (2fr & 2bk). I just bought this car and one speaker is blown. I think i might want to buy new speakers on line and install them myself. So, any info will be helpfull. Thank You, Ruthie
had to find a diagram for a clarion and only knew it came from a subaru. it will be wired into our county cabin which runs on 12 volt solar system only .Now i can install it and listen to the radio .
Thank you very much Colin
Colin, we’re glad we could help you with your car stereo wiring diagram needs.
Hi, I am having trouble installing a Pioneer Stereo, the issue is that the Radio Tuner does not pick up any radio stations. I spoke to a guy in a car accessory shop and he told me that the antenna was a powered antenna and needs to be wired to the new harness. I can’t seem to find the wire for the antenna on the old harness. Does this mean I need a new antenna? Any help is appreciated. Thanks in advance, Mark.