2007 v6 conv. Replaced stereo. All windows quit. Checked cabin fuses/relay and fuses under hood, all good. Working at drivers side. The window has power at switch. New switch=no change. Use alt power source by splicing, works. Try splicing hot wire at switch to "down" wire=nothing, but alternate power wire makes it go up/down. Window drop at open/close works. How in the world does replacing a stereo cause the windows to die? Totally dumbfounded.