I recently purchased my Z and the radio was not working when I bought it. I took it in for repair and was told they can't find parts for a Clarion that old, and I should find a good aftermarket stereo to replace it. I'd like to do the work myself, but there is something on the back of the old unit that has me stumped. There are two plug receptacles....one is a five pin and it connects the radio to the casette player. The other is a seven pronged receptacle and I have no idea where it goes or what it does. I believe the power antenna also hooks into the radio as I can see no other switch for it. It doesn't work either, by the way. If anyone out there can recommend a good aftermaket stereo and explain these questions I have, I'd much appreciate it.