2008 Kia Optima Car Audio Installation Guide

Whether your an expert Kia Optima mobile electronics installer, Kia Optima fanatic, or a novice Kia Optima enthusiast with a 2008 Kia Optima, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2008 Kia Optima vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.

One of the most time consuming tasks with installing an after market car stereo, car radio, satellite radio, xm radio, car speakers, tweeters, car subwoofer, crossovers, audio equalizer, car amplifier, mobile amp, car amplifier, mp3 player, ipod or any car audio electronics is identifying the correct color car audio wires for your 2008 Kia Optima.

The Modified Life staff has taken all its Kia Optima car radio wiring diagrams, Kia Optima car audio wiring diagrams, Kia Optima car stereo wiring diagrams, Kia Optima car radio wiring schematics, Kia Optima car wiring diagrams and cataloged them online for use by our visitors for free. Our automotive wiring diagrams allow you to enjoy your new mobile electronics rather than spend countless hours trying to figure out which wires goes to which 2008 Kia Optima part or component.

Feel free to use any Kia Optima car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the car audio wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the Kia Optima wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2008 Kia Optima.


If you have any questions pertaining to the audio system in the 2008 Kia Optima, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you’re looking for.

Request a Car Stereo Wiring Diagram

If you can’t find a particular car audio wire diagram on Modified Life, please feel free to post a car radio wiring diagram request at the bottom of this page and we’ll do our best to find you the diagram or schematic you need for your mobile audio installation.

Adding More Information

If you would like to help the Modified Life community by adding any missing information or adding a new car audio wire diagram to our resource, please feel free to post it at the bottom of this page.

2008 Kia Optima Car Audio Installation Guide

Car Radio Battery Constant 12v+ Wire: Pink
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the steering column and use the brown wire in the ignition switch harness.
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red
Car Stereo Dimmer Wire: Black
Car Stereo Power Antenna Trigger Wire: Green/Black
Car Stereo Amp Turn-On Trigger Wire: Yellow/Orange
Car Stereo Amplifier Location: Inside the Rear Passenger Side Fender Well (Inside the Trunk).
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Brown
Left Front Speaker Negative Wire (-): White
Right Front Speaker Positive Wire (+): Orange
Right Front Speaker Negative Wire (-): Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Blue
Right Rear Speaker Negative Wire (-): Red

The 2008 Kia Optima radio wire color information above is updated as it is submitted by the Modified Life community.

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  • Reply bronzon February 24, 2012 at 8:50 pm

    How to remove the 2008 Kia Optima factory stereo? I cannot for the life of me remove it by prying on the surrounding trim. Please help. anyone?

  • Reply Darell Barney June 7, 2012 at 12:47 pm

    2010 Kia Optima audio wiring diagram please. thanks.

  • Reply ModifiedLife June 13, 2012 at 8:50 pm

    Darell, ask and you shall receive: 2010 Kia Optima Car Stereo Wiring Diagram

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