Aftermarket stereo install 12v help

[SapperBo]

I just got my 03 Tahoe 3 days ago and installing my Sony head unit has been hell. I got a scosche gm2000 wiring harness and it has a 12v red wire that plugs to the stereo wiring. Now when I turn the key the stereo works, but when I start my truck it stays on for about 5 seconds then shuts off. I googled it and everyone says you have to run a separate wire from somewhere to the 12v wire. My first try fried the wiring harness. Haha. I've got a new harness. Same problem. Can someone tell me where to run it?

 

[OmarR]

http://tahoeyukonforum.com/forum/showthread.php?t=38378

 

[SapperBo]

Thanks

Thank you!

 

[Ryan1126]

should be a yellow wire also you need to hook up along with the red wire.

 

[OmarR]

should be a yellow wire also you need to hook up along with the red wire.

It's not that simple on 03+ trucks.

There is no ignition wire at the radio harness. On/Off commands for the receiver are handled thru data from the BCM.

 

[SapperBo]

It was battery! It was bad so it didn't have enough juice to keep the radio on. Haha. Went to the dealership and they put a new battery in there and Bam it works!