2009 GMC Sierra 1500, Stereo Harness Recommendation

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=146837
Printed Date: May 09, 2025 at 1:08 PM

Topic: 2009 GMC Sierra 1500, Stereo Harness Recommendation

Posted By: johnnygaloshes
Subject: 2009 GMC Sierra 1500, Stereo Harness Recommendation
Date Posted: May 03, 2021 at 9:33 PM

I have a 09 GMC Sierra 1500 basic stereo, don't think it has any amplifiers. Looking to install aftermarket stereo. I don't care of I lose On Star or the door chime, would like to have RCA if possible.. So many of them out there to choose from. Which do you recommend. Thanks!

Replies:

Posted By: i am an idiot
Date Posted: May 04, 2021 at 7:45 PM

https://metraonline.com/part/70-2105

If you get this, and want to retain your retained accessory, let me know and I will let you know where to run that bundle of red wire.

Posted By: johnnygaloshes
Date Posted: May 04, 2021 at 7:51 PM

So this is what i need to install an aftermarket radio. Yes, If you can tell me where to tap into the fuse box for the accessory that would be great!!

Posted By: i am an idiot
Date Posted: May 05, 2021 at 7:34 PM

This is a picture of the junction block just to the left of your brake pedal.

Notice the bottom left slot has no pins in it. The slot just above that is populated with several pins. Pin 8 is retained accessory. If you for some other reason need an ignition source that goes on and off with the key, pin 6.

The bundle of red wire that comes with the above mentioned harness has the proper connector on it already, and it will reach to the radio cavity of that vehicle.

Posted By: johnnygaloshes
Date Posted: May 05, 2021 at 7:44 PM

So this one?

posted_image

Posted By: i am an idiot
Date Posted: May 05, 2021 at 7:48 PM

Posted By: johnnygaloshes
Date Posted: May 05, 2021 at 7:50 PM

Thanks!

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