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2003 Chevrolet Impala Car Audio Wire Guide


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

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

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

2003 Chevrolet Impala Radio Wiring Diagram

This 2003 Chevrolet Impala radio wiring chart shows you all the 2003 Chevrolet Impala 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
Car Radio Accessory Wire (Switched Power 12v+) Yellow
Car Radio Ground Wire Black
arrow Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install!
Car Radio Illumination Wire Gray
Car Stereo Dimmer Wire N/A
Car Radio Antenna Trigger Wire White
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 Chevrolet Impala Speaker Wiring Guide

This 2003 Chevrolet Impala speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 2003 Chevrolet Impala 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
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 (+) Tan
Front Left Speaker Negative Wire (-) Gray
Front Right Speaker Positive Wire (+) Light Green
Front Right Speaker Negative Wire (-) Dark Green
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 (+) Brown
Rear Left Speaker Negative Wire (-) Yellow
Rear Right Speaker Positive Wire (+) Dark Blue
Rear Right Speaker Negative Wire (-) Light Blue
arrow Upgrade your Subwoofer for deeper lows!
Subwoofer Positive Wire (+) N/A
Subwoofer Negative Wire (-) N/A

2003 Chevrolet Impala Speaker Sizes and Location

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

Application Speaker Size and Location
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 6.5″ Speakers
Front Speaker Depth 2.5″ 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 9″ Speakers
Rear Speaker Depth 2.5″ Depth
Rear Speaker Location Rear Deck
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 Chevrolet Impala 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 Chevrolet Impala 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!

20 thoughts on “2003 Chevrolet Impala Car Audio Wire Guide”

  1. Johan, we advise you to run a primary wire to your battery as a power source and ground your negative wire to the chassis (look below):

    1. Find some bare metal on your vehicle. Make sure this bare metal touches the chassis (frame) of the vehicle.

    Bare Metal for Chassis Grounding

    2. Connect a ring terminal to the ground wire coming off your aftermarket amplifier.

    Ground Wire with Ring Terminal

    3. Use a self tapping screw to attach the black wire with ring terminal to the bare metal. Just make sure the metal you are screwing into does not have any wires or vital automotive components behind it.

    Self Tapping Screw

    Hope this helps. Good luck with your 2003 Chevrolet Impala headrest TV installation.

  2. Hi i a 2003 chevrolet impala I did the installation myself. I also have headrest tv’s. My question is can I use the positive and ground cables that are underneath the glove compartment to install my headrest so that I don’t have to use the positive and ground from the stereo wiring? And I would also like to know if there’s a way to have like a switch for the stereo I don’t like that it can b turned on even without the key. Thanks

  3. Delfin, if you’re installing an aftermarket radio into your 2003 Chevrolet Impala and want to retain your steering wheel controls it is possible but it depends on the manufacturer of your aftermarket radio:

    Steering Wheel Control Adapter for Alpine Radio
    Steering Wheel Control Adapter for Blaupunkt Radio
    Steering Wheel Control Adapter for Clarion Radio
    Steering Wheel Control Adapter for Eclipse Radio
    Steering Wheel Control Adapter for JVC Radio
    Steering Wheel Control Adapter for Kenwood Radio
    Steering Wheel Control Adapter for Pioneer Radio
    Steering Wheel Control Adapter for Sony Radio
    Steering Wheel Control Adapter for Valor Radio

    If you have never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck with your 2003 Chevrolet Impala stereo installation.

  4. Yes quick question is it possible to have the volume button on the 2003 Chevrolet Impala steering wheel work with a non factory radio I have a pioneer 3400

  5. Johneric, 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 2003 Chevrolet Impala 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 2003 Chevrolet Impala amp turn on wire is connected. Hope this helps. Good luck with your 2003 Chevrolet Impala stereo installation.

  6. 2003 chevrolet impala. just installed aftermarket radio. got no sound. does the 2 wires left over have anything to do with it?

  7. Sicopata, thanks for the 2003 Chevrolet Impala radio amplifier turn-on wiring information contribution!

  8. Curt, 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 2003 Chevrolet Impala stereo or factory amplifier (if equipped) may be faulty. We suggest you take your car to an experienced audio installer and have them troubleshoot your problem. Hope this helps. Good luck with your 2003 Chevrolet Impala radio troubleshooting.

  9. 03 Impala has no sound – head unit comes on and seems to be functioning properly. I know amp in trunk is good because i tried it in another 03 Impala. How do I go about diagnosing this problem further? Any help is appreciated

  10. Cam, your 2003 Chevrolet Impala may have a factory amplifier that needs to be turned on by your after market radio. The car stereo amplifier trigger wire has to be wired up to turn on your factory amplifier. Unfortunately, we do not have this information but maybe someone from the Modified Life community can post that information here. Hope this helps. Good luck.

  11. i have no sound but the power turns the stereo on but nothing comesout of speakers. does it have something to do with the plug that has two wires that don’t go to anything anymore?

  12. How do I bypass the factory amp? I installed new eclipse speakers for the front and they said I have to bypass the amp in order to get full sound. how abouts do I do that?

  13. The wiring harness from the stock radio has 2 orange wires and one pink one. What orange one do i need to use for the constant power and what should i do with the pink wire? There is also a seperate plug on the back of the stock radio that has two wires one green n black and black w white, What are these for?

  14. The radio does not have a switched wire. It turns on through a databus singal from the computer, hence your delayed on/off functions. It operates as an extension of the computer. Under the Passenger-side dash there is a Auxiliary power drop hidden in the dash which can be accessed by taking the bottom panel off. This drop has a Ground, Ignition(Switched), and a 15-amp constant line.

  15. does anybody know where the amp ignition wire is…its not right on the harness i have…if someone could tell me the color of it that would be great and solve all my problems

  16. I can’t find the yellow car radio switched wire in my 2003 chevy impala. Is the switch wire another color?

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