I have an 02 X5 buld date 05/02 . I am trying to remove the headunit so that I can plug in my FM modulator to the antenna wire for my Sirius radio unit but I cannot get the thing out. There is no screw that I can see under the volume knob and I cannot "pry" out the head unit.

What am I missing? Can I access the Antenna wire from under the dash?