2004 Chevrolet Trailblazer Car Radio Wiring Diagram

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Whether your an expert Chevrolet electronics installer or a novice Chevrolet enthusiast with a 2004 Chevrolet Trailblazer, a car stereo wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car stereo, car radio, car speakers, car amplifier, car navigation or any car electronics is identifying the correct color wires for a 2004 Chevrolet Trailblazer headlight bulb size you need for your low beam or high beam and save time. Also, find your other car light bulb sizes including your fog light, reverse light, turn signal, brake light and more. It’s that easy!

The Modified Life staff has taken all its Chevrolet car radio wiring diagrams, Chevrolet car stereo wiring diagrams, Chevrolet car radio wiring schematics, Chevrolet car wiring diagrams and cataloged them online. Feel free to use any Chevrolet 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 diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2004 Chevrolet Trailblazer.

If you can’t find your car stereo wiring diagram or car radio wiring diagram on Modified Life, please feel free to post a car wiring diagram request (Car Stereo Wiring Diagram Request Page) and we’ll do our best to find you the information you need for your mobile installation.

2004 Chevrolet Trailblazer Car Radio Wiring Diagram

ApplicationWire Color
Car Radio Battery Constant 12v+ WireOrange
Car Radio Accessory Switched 12v+ WireYellow
Car Radio Ground WireBlack
arrow Use a Car Radio Wire Harness and Car Radio Dash Kit for an Easy Car Radio Install!
Car Radio Illumination WireGray
Car Stereo Dimmer WireBrown
Car Stereo Antenna Trigger WirePink
Car Stereo Amp Trigger WireN/A
Car Stereo Amplifier LocationN/A
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.
Front Tweeter SizeN/A
Front Tweeter DepthN/A
Front Tweeter LocationN/A
arrow Use a Speaker Wire Harness for Easy Speaker Installation!
Front Speakers Size6 1/2″ Speakers
Front Speaker Depth3.5″
Front Speakers LocationDoors
Left Front Speaker Positive Wire (+)Tan
Left Front Speaker Negative Wire (-)Gray
Right Front Speaker Positive Wire (+)Light Green
Right Front Speaker Negative Wire (-)Dark Green
arrow Use a Speaker Wire Harness for Easy Speaker Installation!
Rear Speakers Size 6 1/2″ Speakers
Rear Speaker Depth3.5″
Rear Speakers LocationN/A
Left Rear Speaker Positive Wire (+)Brown
Left Rear Speaker Negative Wire (-)Yellow
Right Rear Speaker Positive Wire (+)Dark Blue
Right Rear Speaker Negative Wire (-)Light Blue
arrow Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls.

2 thoughts on “2004 Chevrolet Trailblazer Car Radio Wiring Diagram”

  1. I have a Bose system in a 03 Trailblazer. I would like to change amp to after market . I was looking for a wiring diagram on amp. Mine quit working and I would like to test also. Anyone?

  2. I have the Bose sound system in my 04 Trailblazer and I was wondering if you know what wire is the remote for the rear amplifier? I was told it was the pink but I dont know.


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