2004 Blazer stock wiring

[steiner992]

I have a 2004 Blazer. The radio was recently stolen and they cut the wire harness out as well. I bought a new stock radio (Delco AM/FM/FM2/CD/AUX # 15850275) and a metra wire harness to replace it but the wire colors are all completely different and the guide that came with it does not match my car correctly. I have managed to get the radio working through a lot of research online and trial and error. One thing I cant get working is the lights for the buttons. Off the top of my head, I am fairly certain there are 3 wires I have not used yet on the the blazer...a purple/white, 1 (of 3) gray, and the antenna ground (dont have a power antenna so didnt think it mattered). I am not sure what the purple white one does, only that I know I used it when I hooked up an immobolizer bypass when I previously had an aftermarket stereo installed. Basically I am looking for the wire color information for the 24 pin blazer wire harness. This is the information I have thus far and hope its all correct:

Pin / Func / Color

A1 Class2A

A2 Class2B

A3 RSA Enable

A4 FM Det+

A5 Ant.Gnd Black

A6 RUI Ref Out

A7 RUI1

A8 LF+ Tan

A9 LF- Gray(1 of 3)

A10 RR- Dark Blue

A11 RR+ Light Blue

A12 GND Black

B1 Battery Orange

B2 Ignition Dark Green

B3 SW 12v Out

B4 DIM+

B5 N/C

B6 Amp Mute

B7 RUI2

B8 LR+ Brown

B9 LR- Yellow

B10 RF- Dark Green

B11 RF+ Light Green

B12 Park

I am assuming the DIM+ is one of the 2 thinner gray wires but I am not sure. My best guess is the SW 12v Out or the Park is the purple/white wire as I know it has some importance with the security/immobilizer function of the vehicle.

If you can provide the rest of the coloring information I would be very appreciative.

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[shimmyz 10+ year member]

Why don't you just go to a salvage yard and cut the factory plug out of a junk car? Then simply match the wires and plug in your new radio as if nothing ever happened

 

[steiner992]

i tried that. apparently the only blazer to use the same wire harness as the one I have is 2004 and 2005. Previous years used a different pin count, configuration, and colors. Later years are completely different as well which is why its been so hard to find the information online. either way, I have yet to find a 2004/2005 blazer in any of the local salvage yards with any sort of remnants of the stereo or wiring still inside.

 

[Horsemanwill 10+ year member]

http://techservices.audiovox.com/TechnicalIndex.aspx and if that don't help

http://www.alldatadiy.com/

 

[steiner992]

http://techservices.audiovox.com/TechnicalIndex.aspx and if that don't help
http://www.alldatadiy.com/

From these two sites and my previous information this is what I have gathered so far:

Pin / Func / Color

A1 Class2A

A2 Class2B

A3 RSA Enable

A4 FM Det+

A5 Ant.Gnd Black(1 of 2)

A6 RUI Ref Out

A7 RUI1

A8 LF+ Tan

A9 LF- Gray(1 of 3)

A10 RR- Dark Blue

A11 RR+ Light Blue

A12 GND Black (1 of 2)

B1 Battery Orange

B2 Ignition Dark Green(1 of 2)

B3 SW 12v Out Yellow

B4 DIM+ Brown

B5 N/C

B6 Amp Mute

B7 RUI2

B8 LR+ Brown

B9 LR- Yellow

B10 RF- Dark Green(1 of 2)

B11 RF+ Light Green

B12 Park

I also know that 1 of the 3 of the gray wires is Illumination but I dont know which pin that falls on as it does not match the my previous pinout descriptions. Also, I am 100% certain of all wire location and colors listed above expect the Ignition Dark Green but I am fairly sure it is correct. A purple/white wire still remains as well as pins A1, A2, A3, A4, A6, A7, B6, B7, and B12.

 

[steiner992]

bump

 

[steiner992]

bump