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2009 Cadillac CTS Radio Wiring Diagram

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Question: Where can I find a 2009 Cadillac CTS stereo wiring diagram? What are the 2009 Cadillac CTS radio wiring harness colors?

If you’re looking to change the radio in your 2009 Cadillac CTS or troubleshoot why your car radio stopped working, we’re here to help!

Our comprehensive 2009 Cadillac CTS stereo wiring diagram shows you all the stereo wire harness colors, car speaker wiring colors and car speaker sizes. Use our 2009 Cadillac CTS stereo wiring guide to help you with your car radio and installation needs.

2009 Cadillac CTS Stereo Wiring Diagram

This 2009 Cadillac CTS stereo wiring chart shows you all the 2009 Cadillac CTS stereo 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+) Run a wire to the fuse box or ignition switch harness for switched power.
Car Radio Ground Wire Black/White
arrow 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 Amp Turn-On Trigger Wire Dark Green
Car Radio Amp Mute Wire N/A
Car Radio Amplifier Location On the passenger side of the trunk behind the trim.
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.

2009 Cadillac CTS Speaker Wiring Guide

This 2009 Cadillac CTS speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 2009 Cadillac CTS 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 (-) Dark Green
Front Right Speaker Positive Wire (+) Light Green
Front Right Speaker Negative Wire (-) Light 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 (-) Brown
Rear Right Speaker Positive Wire (+) Dark Blue
Rear Right Speaker Negative Wire (-) Black
arrow Upgrade your Subwoofer for deeper lows!
Subwoofer Positive Wire (+) N/A
Subwoofer Negative Wire (-) N/A

2009 Cadillac CTS Speaker Sizes and Location

This 2009 Cadillac CTS speaker size chart shows your speaker measurements and speaker locations. Use this chart to see what speaker fits in your 2009 Cadillac CTS.

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 Size (Bose) 9″ Speakers
Front Speaker Depth 3″ Depth
Front Speaker Location Front Dash
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 5.25″ Speakers
Rear Speaker Depth 3″ 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 2009 Cadillac CTS 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 2009 Cadillac CTS 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!

8 thoughts on “2009 Cadillac CTS Radio Wiring Diagram”

  1. Is it possible to add a USB port or factory iPod controls to an 2009 cadillac cts that didn’t come with the factory option? anyone know?

  2. i need color diagram for speakers for a 2004 cadillac cts. wanted to know also if i can use the stock wiring from stock amp to connect my aftermarket amp and speakers. or should i run new wiring. thanks in advance.

  3. hi there wanted know if you guys can help me with speaker wiring/color diagram for 2004 cadillac cts. thanks in advanced.

  4. I have the 2009 CTS with NAV and 4g. It came with XM. I have a lifetime subscription with Sirius. I would rather switch the XM over to Sirius and pay $5 a month for the extra reciever than buy XM lifetime for $700+. XM is charging $35 every 3 months now. Can this be done using the factor system in the car? If I have to replace the factor system is it going to cost more than the $700 for XM lifetime? Thanks for any help you can provide.

  5. Jerry, most late model vehicles do not have USB input on the factory radio. You would have to install an aftermarket radio that has a USB input:

    After Market Radios with USB Input

    If you’ve 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 2009 Cadillac CTS stereo installation.

  6. My 2009 CTS has the basic XM stereo. It has no auxilary jack in the console. Does the back of the stereo unit have a USB input the I can attach my own USB cable?

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