Question: Where can I find a 2005 Chevrolet Trailblazer radio wiring diagram? What are the 2005 Chevrolet Trailblazer radio wiring harness color codes?
If you’re planning to upgrade the radio in your 2005 Chevrolet Trailblazer or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 2005 Chevrolet Trailblazer radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 2005 Chevrolet Trailblazer.
In This Guide
2005 Chevrolet Trailblazer Car Stereo Wiring Diagram
This 2005 Chevrolet Trailblazer radio wiring chart shows you all the 2005 Chevrolet Trailblazer stereo wire color codes and their radio wire functions. This easy-to-follow guide can help you install a new car stereo or figure out problems with your stereo wiring harness and radio setup. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Battery Constant Power Wire (12v+) | Orange (Pin B1 in 24-Pin Plug) |
| Accessory Switched Power Wire (12v+) | Run a wire to the fuse box or ignition switch harness for switched power. |
| Ground Wire | Black/White (Pin A12 in 24-Pin Plug) |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | N/A |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | Pink (Pin B3 in 24-Pin Plug) |
| Amplifier Turn-On Wire | Purple (Pin A3 in 24-Pin Plug) |
| Amplifier Mute Wire | Gray/Black (Pin B6 in 24-Pin Plug) |
| Amplifier Location | N/A |
2005 Chevrolet Trailblazer Speaker Wiring Guide
This 2005 Chevrolet Trailblazer speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 2005 Chevrolet Trailblazer chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (-) | N/A |
| Front Left Tweeter Positive Wire (+) | N/A |
| Front Left Tweeter Negative Wire (-) | N/A |
| Front Right Tweeter Positive Wire (+) | N/A |
| Front Right Tweeter Negative Wire (-) | N/A |
| Front Left Speaker Positive Wire (+) | Tan (A8 in 24-Pin Plug) |
| Front Left Speaker Negative Wire (-) | Dark Green (A9 in 24-Pin Plug) |
| Front Right Speaker Positive Wire (+) | Light Green (B11 in 24-Pin Plug) |
| Front Right Speaker Negative Wire (-) | Orange/Black (B10 in 24-Pin Plug) |
| Rear Left Tweeter Positive Wire (+) | N/A |
| Rear Left Tweeter Negative Wire (-) | N/A |
| Rear Right Tweeter Positive Wire (+) | N/A |
| Rear Right Tweeter Negative Wire (-) | N/A |
| Rear Left Speaker Positive Wire (+) | Brown (B10 in 24-Pin Plug) |
| Rear Left Speaker Negative Wire (-) | Dark Green/White (B9 in 24-Pin Plug) |
| Rear Right Speaker Positive Wire (+) | Dark Blue (A11 in 24-Pin Plug) |
| Rear Right Speaker Negative Wire (-) | Black (A10 in 24-Pin Plug) |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
2005 Chevrolet Trailblazer Amplifier Pin-Out Guide
This 2005 Chevrolet Trailblazer amplifier wiring chart shows you every speaker wire color and the speaker wire pin-out location. Use this 2005 Chevrolet Trailblazer amplifier wiring guide to help you with your car audio install. If the car amplifier wiring information you’re searching for is not listed, please don’t hesitate to ask for it at the bottom of this page.
| Application | Amplifier Wire Color |
|---|---|
| Front Left Speaker Positive Wire (+) | Tan (A5 in 24-Pin Plug) |
| Front Left Speaker Negative Wire (-) | Gray (A6 in 24-Pin Plug) |
| Front Left Midrange Speaker Positive Wire (+) | Dark Blue (A9 in 24-Pin Plug) |
| Front Left Midrange Speaker Negative Wire (-) | Light Blue (A10 in 24-Pin Plug) |
Save time with Quick Splice Connectors  for fast and easy wire connections! |
|
| Front Right Speaker Positive Wire (+) | Light Green (A7 in 24-Pin Plug) |
| Front Right Speaker Negative Wire (-) | Dark Green (A8 in 24-Pin Plug) |
| Front Right Midrange Speaker Positive Wire (+) | Orange (A11 in 24-Pin Plug) |
| Front Right Midrange Speaker Negative Wire (-) | Dark Green (A12 in 24-Pin Plug) |
| Save time with Quick Splice Connectors for fast and easy wire connections! |
|
| Front Left Low Level Speaker Positive Wire (+) | Tan (B10 in 24-Pin Plug) |
| Front Left Low Level Speaker Negative Wire (-) | Dark Green (B9 in 24-Pin Plug) |
| Front Right Low Level Speaker Positive Wire (+) | Light Green (B8 in 24-Pin Plug) |
| Front Right Low Level Speaker Negative Wire (-) | Dark Green (B9 in 24-Pin Plug) |
| Save time with Quick Splice Connectors for fast and easy wire connections! |
|
| Rear Left Low Level Speaker Positive Wire (+) | Brown (B6 in 24-Pin Plug) |
| Rear Left Low Level Speaker Negative Wire (-) | Dark Green/White (B5 in 24-Pin Plug) |
| Rear Right Low Level Speaker Positive Wire (+) | Dark Blue (B4 in 24-Pin Plug) |
| Rear Right Low Level Speaker Negative Wire (-) | Black (B3 in 24-Pin Plug) |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
2005 Chevrolet Trailblazer Speaker Sizes and Locations
This 2005 Chevrolet Trailblazer speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 2005 Chevrolet Trailblazer.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 6.5″ Speakers |
| Front Speaker Depth | 3.5″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speakers Size | 6.5″ Speakers |
| Rear Speaker Depth | 3.5″ Depth |
| Rear Speaker Location | Rear Doors |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 2005 Chevrolet Trailblazer radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!
Contribute
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17 thoughts on “2005 Chevrolet Trailblazer Radio Wiring Chart”
where is the bose amp located in a 05 chevy trailblazer?
is there rca hookups on the radio of a 05 chevy trailblazer
Devon, most late model vehicles do not have RCA hookups on the factory radio. Hope this helps. Good luck.
Does replacing the factory deck in the newer Trailblazers affect the computer or engine performance?
I have a 2005 Chevy Trailblazer without a bose system… is there still an oem amp installed? I wanna put in a new headunit but not sure if I need an amp bypass and the manual says nothing bout it but i know some models have an amp
Which is the best place to run my switched power source.
where is best place to run wire to fuse box for power source?
Ray, run a wire to the steering column and use the orange wire in the ignition switch harness. This will provide a switched power source. Hope this helps. Good luck with your 2005 Chevrolet Trailblazer stereo installation.
Hi, I’ve had to install a little add-on XM radio receiver (onyx) because my 2005 Chevy Trailblazer just stopped picking up the audio signal (xm stations were still displayed, but no audio). Because the Onyx antenna audio is always static-y, so I’d like to wire it into my Aux Audio Input for a clearer sound. I’ve found the box behind the dash that is labeled Aux 1 & Aux 2 (left and right) input, but my car is not seeming to acknowledge any aux input except the CD player. Am I hooking this whole thing up wrong? Help please…um, and will you please use “girl” terms? I’m on my own with this project!!! Thank you~ Wendy
Where is the stereo amp located in a 2005 Chevy Trailblazer?
I want to install a new stereo into my 2005 trailblazer and I am concerned that the GM chime or the Onstar options will no longer function if I do, or I am under the assumption that I will have to purchase a new chime/Onstar unit if I want to still be able to hear any of the vehicle chime alarms. Can anyone tell me if this is true or maybe what my result will be if I install the new stereo just connecting the speaker and power wires and nothing else?
I just installed a Kenwood KVT-514 head unit in my 2005 chevrolet trailblazer. I have the bose system and the rear seat entertainment system. I used a metra gmos-014 integration interface kit. It allows you to retain chimes and onstar along with everything else. The problem I have is I now have no rear audio controls or channels. I am not getting power to the rear controls. Any ideas?
Hey Josh, I am looking at the GMOS-014 interface for my 2005 Chevrolet Yukon especially it says to retain RSE! does your oem dvd work well? To answer your question about the rear audio controls retention…NO. I talked to a Tech a Metra, and He says that they dont have any interfaces that retains rear audio yet. I hope this answers your question.
I owned a 2005 trailblazer with a radio that works, but the cd player is defective. I’m thinking of removing radio/cd complete unit and ordering same type unit from chevrolet dealer. I was told by the dealership technician that the replacement unit has to be program at the dealership with vehicle, or else it won’t function properly. Any suggestion or ideas?
I have a 2005 Chevy Trailblazer EXT LT with the premium Bose sound system. It does not have an auxiliary jack but does have an aux/cd button on the unit. I assumed that meant that there would be jacks somewhere on the unit that I could plug into to play my i-Pod as the auxiliary input. I pulled the stereo out and found no jacks or plugs. Is there any way to accomplish this? Thanks!
Doug, we suggest you purchase an automotive auxiliary input adapter. This adapter will allow you to input any Apple iPod, 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 bluetooth transmitter you will need:
Aux Input Adapter for 2005 Chevrolet Trailblazer
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 2005 Chevrolet Trailblazer bluetooth transmitter installation.
Hey Josh, I also have the GMOS-014 for my 2005 Yukon with Bose. Yes the rear audio controls are gone and the rear dvd does play, BUT the there is no RSE audio. There is also some noise interference using the GMOS-014. When the chimes, music or whatever sound play I can hear a hissing static in the speakers. Metra tech told me its because of Bose amp and using aftermarket interface. The bad thing is the hissing raises/lowers with volume, even the music is louder it still irritates make knowing it(I am an audiophile I guess ). I probably could get past the interference, but the RSE has no audio….just the interference noise LOL. If there is anyone who has the GMOS-014 without that problem or know hows to fix it, please comment and let me know!