2004 Chevrolet Colorado Car Radio Wiring Diagram

Whether your an expert Chevrolet Colorado mobile electronics installer, Chevrolet Colorado fanatic, or a novice Chevrolet Colorado enthusiast with a 2004 Chevrolet Colorado, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2004 Chevrolet Colorado 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 2004 Chevrolet Colorado.

The Modified Life staff has taken all its Chevrolet Colorado car radio wiring diagrams, Chevrolet Colorado car audio wiring diagrams, Chevrolet Colorado car stereo wiring diagrams, Chevrolet Colorado car radio wiring schematics, Chevrolet Colorado 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 2004 Chevrolet Colorado part or component.

Feel free to use any Chevrolet Colorado 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 Chevrolet Colorado 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 Colorado.


If you have any questions pertaining to the audio system in the 2004 Chevrolet Colorado, 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.

2004 Chevrolet Colorado Car Radio Wiring Diagram

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. The accessory turn-on is controlled by the lan serial network. Run a wire to the Fuse Box or ignition switch harness.
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: 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 (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
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 (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue


  1. clint spero Reply

    I have a 2005 chevy colorado single cab and I’ve hooked a new cd player up in it. But I’ve come across two purple wires amidst the harness that a dont know what they are. They seem to be linked to the tweeters in the doors but do not have markings indicating positive or negative , in fact they are the same color purple. whenever i do hook them into a line from the cd player one side of the door speakers gets louder than the other. Does anyone have any idea what they are and how i should go about hooking them up? Also the tweeters in the doors don’t work at all so there has to be a link between the two. anyone? thanks

  2. Jeff Schutter Reply

    what are the purple and the purple black wires in the radio harness. on an other site i found it calls it a 1807 Class 2 Serial Data what is that? could that be the accessory switched 12+ volt im looking for? anyone?

  3. i am looking for the inside relay & fuse panel, of my 2004 chevy colorado. it states, i should remove the seat belt fuse, if i work around the steering wheel. i looked real good with a BRIGHT trouble lite. and found no panel on the left under dash. why would the manual say take it out? if there was a panel?

  4. on the factory radio in a 2004 chevy colorado does it have aux line in where you can plug something into it to use the speakers in the truck for sound?

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