2001 Chevy blazer stereo wiring question

[TacoTastic]

Working on my stereo system currently, and have a couple of questions. My blazer has a 1.5 din head unit that i took out, i purchased a 1 din for it, and the wire harness and stuff. But there is an extra wire harmess that plugs into the factory stereo other than the normal one with the auto on and off and speaker outputs etc. Anyone have a clue as to what this extra wiring harness is? Is it crucial or can i get away without plugging it in? Thanks for any help!

 

2001 Chevy Blazer 4 door, 1.5 din factory head unit.

[TacoTastic]

And also, can anyone tell me, or produce a link showing how to take the rear door panels off from the blazer? I've searched and searched that panel, there is only one screw. i take it out pull it out and all the clips surrounding the pamel all pop out, but right in the middle it is still bolted or pinned in and i cant get it off. I dont really want to break my panel, so if anyone knows how that be great.

[00Silverado4x4]

Where was the one screw you did remove? There is usually one in the door handle area as well.

[TacoTastic]

Thats the one i removed.

Exccelent profile picture, catching it 100000. I cought mine at 111111

[00Silverado4x4]

Thats the one i removed.

Exccelent profile picture, catching it 100000. I cought mine at 111111

I got that one as well. As my wife told me my truck think I'm number 111111!

 

 

I don't know if this will help you, but this is what I'm looking at to see what else there may be hold up your panel removal.

http://www.lmctruck.com/icatalog/cst/full.aspx?Page=25