I just got my Z3 and the radio stations aren't saving. Every time I turn off the car and turn it back on it goes back to default which is nothing.

What should I do?

Did you connect the yellow wire to a source that has constant power?

Doesn't sound like he did...

Sobefuddled,

Did you install the Z3 yourself or have someone do it?

someone else did.....

Well depending on if this was a pro install or a back-yard n' beer type of install, then you may want to get the person who put it in, back into the dash...

I think you can find the proper pin outs and wire color connections on Crutchfield.com, but it really sounds like the installer did not connect the deck to a constant power wire and that's what the deck needs to retain that memory.