Stereo & Electronics - radio/window problem

i have a alpine radio works great but randomly it shuts off and the windows wont work wile its shut off. i turns back on randomly and everything is fine.i think its a ground but does the windows and radio share a comon groud?if so where is it located?

It's not a ground - it's your retained accessory power (RAP) circuit which is controlled by the Body Control Module (BCM). The problem may be caused by a loose wire at the BCM or by a broken solder joint inside the BCM.

There is more information in this thread (http://www.ls1tech.com/forums/general-lsx-automobile-discussion/883334-ls1-body-control-module-problems-fix.html). (The original poster got pissed off for some reason and deleted the post but it is quoted a few posts further down.)