Question about 2003 GMC Sierra

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Special wiring harness for new stereo in 2005 sierra

Do i need an expensive wiring harness for my kenwood stereo to replace the factory one in a 2005 gmc sierra 1500?

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Yes u do....I have an 03 sierra and apparently they changed everything in 03.....the harness is over $100.....but u need it....and they dont sell a reg wiring kit from 03 and up....if it was an 02, then yes u could get away cheap......it has to do with the steering wheel switches

Posted on Jan 24, 2010

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No check with best buy they have wiring kits you can install on your kenwood that will plug into the factory harness.

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Posted on Jan 03, 2009

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Want to hard wire a factory wiring harness 2002 chevrolet hd 250 to a kenwood stereo


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Not sure I understand your question. Did you buy a harness adapter for GMC, or are you trying to just cut the connector off the factory radio and solder it to your CD player? If the latter, below is the color code for your factory wiring.

1994 GMC Sierra C1500 Car Radio Wiring Schematic
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
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Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
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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

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How to hook up a kdc-105 kenwood in a sunfire


There are 3 things you need to purchase for this install. 1) The factory spec install kit. 2) The factory spec additional wiring harness. 3) Antenna adapter.

Find the easied way to remove the plastic cowling around the radio and ac controls. Usually you can locate screws helping to retain the plastic dash parts. Be careful not to break the plastic dash by taking your time and looking over and over the part ofr connection hardware. Once you have located and removed all/if any screws, carefully pry out on the piece you are removing. There are often metal clips on the back of the piece that also help to retain the dash. Once that is removed, unbolt/unclip the factory stereo and slowly pull it out of the dash. Remove the factory harness from the backside of the factory stereo. DO NOT CUT THE HARNESS!! The wiring harness you have purchased is designed to plug and play into the factory harness. All you hae to do is color match the Kenwoods harness with the one you purchased. When wiring the two harnesses together use connectors **** a **** connectors, crimp connectors so forth and so on. If there is wiring you will not be using, take some electrical tape and tape the bare wire. We don't want a short. Once you are sure and have doubled checked that all the wiring is secure and matched, reverse the order of disassembly.

The plastic install kit should replace the factory radio size difference. Just remember to take the metal sleeve tha came with the kenwood and install it into the plastic install kit via the instructions provided. Slide the Aftermarket stereo into the sleeve you just installed. Then you are ready to make all the needed connections. Before you reassemble everything make sure to do a test run with your stereo. If all is well reassemble and jam on.

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Factory radio wiring color codes


Here ya go. enjoy!
2002 GMC Sierra C1500 Car Radio Wire Color Codes
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: Under the center console.
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

May 14, 2009 | 2002 GMC Sierra 1500

2 Answers

Installing an aftermarket stereo, spliced the wires and have everything connected including the remote wire to the factory amp wire but still no sound.


There is no remote wire on these newer trucks....03 and up....u have to buy the harness....although i didnt....i have an 03 gmc sierra and just pulled the schematic and matched the wires. And there is no programming to do on an aftermarket stereo.....I work for GMC and we cant program aftermarket stereos......if u buy the right harness ...and its over $100 then everything should work just fine.....and this does not disarm ur alarm system either....mine still works fine....hope this helps

May 08, 2009 | 2003 GMC Sierra

1 Answer

Put in new stereo in 2001 Pontiac Sunfire now have no Panel operation-all panel lights on but no ppower to controls have been told I need to increase a fuse size but which one?


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Jan 20, 2009 | 2001 Pontiac Sunfire

2 Answers

Trying to figure out if i really need a special wiring harness for my 2005 gmc sierra 1500 i just got a new kenwood stereo to replace the factory one and have been told that i have to have a special...


HI there... It would be a wise idea to get the special wiring harness for you aftermarket radio. There are several reasons for this. 1 is that it will make your installation a lot easier because it will plug right in to the factory plug and all you have to do is wire the radio to the wires on the new plug.
2) the newer vehicles have the radios wired for lights when you turn your headlights on. aftermarket radios don't always have that. also your stock radio probably stays on when you turn your ignition off and goes off when you open a door. the aftermarket radio is not set up for this and could cause electrical problems if not hooked up. to avoid any nasty electrical headaches I would advise getting that special plug. Hope this helps you out

Jan 03, 2009 | 2003 GMC Sierra

1 Answer

Installing after market stereo


Dave,

You will need to go buy a wiring harness adapter from your local Walmart (usually cheapest there) or Local Electronics place (ie Best Buy). The wire harness that goes out from the radio goes into the Adapter and the adapter plugs into the car harnesses. Also these Adapters come with the wiring diagrams for your vehicle. They typically run 10 - 15 bucks depending on where you get them. Thanks for using FixYa!

Sincerely,

JC

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