Stereo & Electronics - What the heck is this?

Any ideas? And what should it be attached too? Thanks!

http://i71.photobucket.com/albums/i135/csumb02/CIMG2689.jpg

I have no idea what that is, im sure as hell its not under my center console though. Looks like some kind of light sensor?

Thanks for the response, that was my thought also. Everything is factory so it could be anything. One day when I have some free time Ill chase it down.

looks like a hidden or glass mounted type rado antenna from the size of the wire, but definately not stock