I have 2000 4runner and the radio made a loud crack and the antenna retracted and I have nothing now. The lights flashed for a few days and killed my battery and now its makes a wierd noise that sounds like breathing. How do you remove the radion or disconnect.

Frusrated Canadian ....and a poor typer

I don't know if this matches exactly for your year but check it out.
http://www.castulucci.com/projects/carpc/oemnaviaccess/