It's working again. I had taken the radio in and out about 3-4 times checking all the wiring to try and figure out what happened. Every time I unplugged the stereo with the ignition off and then plugged it back in....no worky! Well, today I figured I'd try unplugging it and plugging it back in with the ignition on! Voila, it works again!
Now you know, and knowing is half the battle!