2008 Toyota Tacoma Car Radio Wiring Instructions

Whether your an expert Toyota Tacoma mobile electronics installer, Toyota Tacoma fanatic, or a novice Toyota Tacoma enthusiast with a 2008 Toyota Tacoma, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2008 Toyota Tacoma 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 Toyota Tacoma.

The Modified Life staff has taken all its Toyota Tacoma car radio wiring diagrams, Toyota Tacoma car audio wiring diagrams, Toyota Tacoma car stereo wiring diagrams, Toyota Tacoma car radio wiring schematics, Toyota Tacoma 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 Toyota Tacoma part or component.

Feel free to use any Toyota Tacoma 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 Toyota Tacoma wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2008 Toyota Tacoma.


If you have any questions pertaining to the audio system in the 2008 Toyota Tacoma, 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 Toyota Tacoma Car Radio Wiring Instructions

Car Radio Battery Constant 12v+ Wire: Blue/Yellow
Car Radio Accessory Switched 12v+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Green
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Violet
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Blue
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 (+): Red
Right Rear Speaker Negative Wire (-): White

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

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  • Reply Brandon West January 21, 2011 at 8:38 am

    Concern: Aftermarket radio has one plugin, the factory radio I just pulled out has like 3 plugs. Do I cut and splice only the wires I need and forget the others or what? Thanks!

  • Reply Bill Garmon May 12, 2011 at 9:07 am

    Hey, does anyone know if the green radio illumination wire is the same as the dimmer wire on a Kenwood deh-b848u for a 2008 Toyota Tacoma? I’m trying to dim the radio using the dash control. Thanks for your help!

  • Reply Brian September 29, 2011 at 11:46 am

    Im was an installer in my past life. Here is a good tip for you guys. When you get your dash all apart drop your side cutters. Spend the extra money and get a wire harness.
    Here is what cutting those wires can do.

    1. Loose wires can be a fire hazard
    2. Its messier than purchasing a wire harness.
    3. When you want to sell your rig it makes it very hard to throw the stock unit back in.

    I own a 2008 Toyota Tacoma TRD OFFROAD. I just installed a sat radio and a harmin kardin ipod/ aux port. Using stock JBL desk. If you have questions feel free to ask. Thanks, Brian. Time To Shine Mobile (IASCA)

  • Reply Gary Stackaruk November 3, 2011 at 7:24 am

    I have a 2012 Tacoma extra cab, 2.7 L ,SR5 package,4×4. I bought the single din Alpine CDE-123 head unit and two sets of component speakers. Fronts to be Energy 6.5 and rears to be jbl 6×8 and a sub-powered by Infinity – Basslink 200w amp and powered by an Alpine PDF-4-100w x4 Toyota’s six speaker stereo consists of 2 speakers in each fronts doors (mid range and tweeter) equals 4 speakers plus two in the ceiling which equals 6. No rear door speakers. I took off both front door panels, removed both 6×9 and tweeters.(Garbage)and installed a set of Energy 6.5 component speakers. The wiring is the following: 4 wires(Plug In) to tweeter and two wires to the 6×9. Color of the wires is Lt. Green and blue, Lt Green being the positive and blue the negative. I took the two 6×9 wires and ran direct to the crossover for power,ran from the crossover to the mid range energy and tweeter wire to the crossover. A-Ok so far. Turned on power and nothing. When I plugged in the old tweeter there was power but the new energy’s sounded awful,static,mid range thumping, so I took and cut off the old tweeter plug(Two Lt. Green and two blue and joined them together – Lt. Green to Lt. Green and Blue to blue (parallel wiring). and now I have power, but my new speakers sound horrible. Have not changed the head unit yet. What am I doing wrong. Should I run a new speaker wire from the door to the head unit? or wait to change the head unit to figure it out then. I am a little confused. I do what I can, running cables so when I take her in to install the new head unit everything else is done for the installer. The present head doesn’t have enough wattage to make my new speakers sing, not even close. What is my best wiring option. Thanks, Gary.

  • Reply ModifiedLife November 14, 2011 at 8:34 pm

    Gary, your 2012 Toyota Tacoma factory stereo system may run on a different impedance (ohm rating) than your aftermarket speakers. Most aftermarket speakers run on 4-ohms. We suggest you install your aftermarket radio then run wires straight to the head unit rather than using the factory amplifier. This will eliminate any problems with mismatched ohm ratings. 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 2012 Toyota Tacoma speaker and stereo installation.

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