How do you remove the factory stereo unit from a 1995 pontiac firebird?

[Chad]

I have gotten to the point of taking the cover off, and unscrewing it, i can take the radio cable out easily, but the other wire wont come out

 

[Zimgxp]

If it is a round black wire, its the antenna. It prolly isnt long enough to pull out. unplug it from the radio.