2006 Hummer H3 Car Audio Wire Harness Information

Whether your an expert Hummer H3 mobile electronics installer, Hummer H3 fanatic, or a novice Hummer H3 enthusiast with a 2006 Hummer H3, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2006 Hummer H3 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 2006 Hummer H3.

The Modified Life staff has taken all its Hummer H3 car radio wiring diagrams, Hummer H3 car audio wiring diagrams, Hummer H3 car stereo wiring diagrams, Hummer H3 car radio wiring schematics, Hummer H3 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 2006 Hummer H3 part or component.

Feel free to use any Hummer H3 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 Hummer H3 wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2006 Hummer H3.


If you have any questions pertaining to the audio system in the 2006 Hummer H3, 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.

2006 Hummer H3 Car Audio Wire Harness Information

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: N/A
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: Pink
Car Stereo Amplifier Location: Located behind the trim in the left side of cargo area next to subwoofer.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Dark Green
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Orange/Black
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Dark Green/White
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Black


  • Reply Wendy dutcher March 18, 2011 at 10:28 am

    Hello, I have a 2006 Hummer H3 and my onstar isn’t working at all anymore along with my stereo doesn’t automaticly turn on when I start the truck, I have to manually turn it on and off now. It is driving me crazy and I don’t have alot of money to take it to a professional so I’m hoping you can be my life saver :) Thank you so much for even reading this. Wendy

  • Reply alex cedres May 23, 2011 at 1:01 pm

    Hello, I just both a 2006 hummer h3, I wanted to connect my ipod but the radio has no aux conection, most places I check wanted to know what radio sys is installed, I don’t see any brand name on it, it has, am, fm, and xm frequencies and cd player built in, can you please identefied the sys and what will be compatable with this, I both an fm trasmiter but doesn’t work that well so I need to hard wire somenthing that will work for good. Thanks Alex

  • Reply ModifiedLife June 1, 2011 at 1:50 pm

    Alex, you will need an automotive auxiliary input adapter. This adapter will allow you to input any mp3 player or portable music player into your factory radio. This is the easiest and most cost effective way to add an audio input into your factory stereo. Here is the adapter you will need:

    Aux Input Adapter for 2006 Hummer H3

    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 2006 Hummer H3 aux input adapter installation.

  • Reply cortez March 21, 2012 at 11:31 am

    I would like to know if a 2006 hummer h3 stereo will fit in my 2007 hummer H3? I dont have sirius xm radio in my 2007 hummer h3 and I know that some 2006 models carry that feature in them. is there a way to know if the 06 has it ? and will it fit right in ? anyone?

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