Stereo & Electronics - Power antenna in my SS

I have a power antenna from BYUN speed thatI want to put in my SS. Anybody have any idea as where to power it from so it works like it's supposta? Comes on with the radio, goes off with the radio. Any opinions would be appreciated.

http://www.blackcamaro.com/antenna.htm

beat me to the punch. I followed those directions and it took about an hour. One of my favorite mods on my car besides the T/A bezel

Thanks for the help, guys.