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2003 Ford Focus Car Stereo Wiring Diagram


Question: Where can I find a 2003 Ford Focus radio wiring diagram? What are the 2003 Ford Focus radio wiring harness colors?

If you’re looking to change the radio in your 2003 Ford Focus or troubleshoot why your car radio stopped working, we’re here to help!

Our comprehensive 2003 Ford Focus radio wiring diagram shows you all the radio wire harness colors, car speaker wiring colors and car speaker sizes. Use our 2003 Ford Focus stereo wiring guide to help you with your car radio and installation needs.

2003 Ford Focus Radio Wiring Diagram

This 2003 Ford Focus radio wiring chart shows you all the 2003 Ford Focus 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+) Orange/Black (Thick Wire)
Car Radio Accessory Wire (Switched Power 12v+) Yellow/Green
Car Radio Ground Wire Black/Yellow and Black/Green
arrow Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install!
Car Radio Illumination Wire Orange/Black (Thin Wire)
Car Stereo Dimmer Wire N/A
Car Radio Antenna Trigger Wire N/A
Car Radio Amp Turn-On Trigger Wire N/A
Car Radio Amp Mute Wire N/A
Car Radio Amplifier Location N/A
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.

2003 Ford Focus Speaker Wiring Guide

This 2003 Ford Focus speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 2003 Ford Focus 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 Radio Wire Color
Front Center Speaker Positive Wire (+) N/A
Front Center Speaker Negative Wire (-) N/A
arrow 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
arrow Upgrade your Tweeters for cleaner audio highs!
Front Left Speaker Positive Wire (+) White/Black
Front Left Speaker Negative Wire (-) Gray/Black
Front Right Speaker Positive Wire (+) White/Red
Front Right Speaker Negative Wire (-) Gray/Red
arrow 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
arrow Upgrade your Tweeters for cleaner audio highs!
Rear Left Speaker Positive Wire (+) White/Purple
Rear Left Speaker Negative Wire (-) Gray/White
Rear Right Speaker Positive Wire (+) White
Rear Right Speaker Negative Wire (-) Gray
arrow Upgrade your Subwoofer for deeper lows!
Left Subwoofer Positive Wire (+) N/A
Left Subwoofer Negative Wire (-) N/A
Right Subwoofer Positive Wire (+) N/A
Right Subwoofer Negative Wire (-) N/A

2003 Ford Focus Speaker Sizes and Location

This 2003 Ford Focus speaker size chart shows your speaker measurements and speaker locations. Use this chart to see what speaker fits in your 2003 Ford Focus.

Application Car Speaker Size
Front Center Speaker Size N/A
Front Center Speaker Depth N/A
Front Center Speaker Location N/A
arrow Upgrade your Center Speakers for awesome sound!
Front Tweeter Size N/A
Front Tweeter Depth N/A
Front Tweeter Location N/A
arrow Upgrade your Tweeters for cleaner audio highs!
Front Speaker Size 6″ x 8″ Speakers
Front Speaker Depth 3″ Depth
Front Speaker Location Front Doors
arrow Use a Speaker Wire Harness for easy Speaker Installation!
Rear Tweeter Size N/A
Rear Tweeter Depth N/A
Rear Tweeter Location N/A
arrow Use a Speaker Wire Harness for easy Speaker Installation!
Rear Speaker Size 6″ x 8″ Speakers
Rear Speaker Depth 3″ Depth
Rear Speaker Location N/A
arrow 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 2003 Ford Focus 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 2003 Ford Focus 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!

9 thoughts on “2003 Ford Focus Car Stereo Wiring Diagram”

  1. I have a 2003 Ford Focus and have just finished installing it using this diagram but now i am having problems. When i turn on the radio and insert a cd it plays fine but as soon as i start moving the car the cd skips and the sound stops. This also happens when I use my ipod with the line out on the stereo. This never happened before in my 94 Saturn SL2. Did I possibly confuse the 12v wires or something? anyone?

  2. Kritix, as much as we would like to help you, most of the car stereo wiring information listed on our website is provided by our visitors. We currently do not have any information on the 2003 Ford Focus SVT subwoofer wiring but hopefully someone from our knowledgeable Modified Life community would be able to chime in and assist you.

  3. I have my 2003 ford focus svt subwoofer amp and I need the pin out of the connector. Obviously not the one that connects to the speaker but rather the audio/power input side. Thanks!!

  4. Jaydon, as much as we would like to help you, most of the car stereo wiring information listed on our website is provided by our visitors. We currently do not have any information on the 2003 Ford Focus subwoofer wiring but hopefully someone from our Modified Life community would be able to chime in and help you out.

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