when i bought my Z, it had a clarion CAA-355 6 disc cd changer installed....the changer controller was wired into the dash somwhere and stuffed in the glove compartment. i've tried a bunch of times and i cant figure out how to work the thing....the stock stereo is still in place and does not have a single CD option (im assuming the AUX TAPE button would probably activate the changer) when i turn on the controller for the CD changer all i get is "Er 9" flashing.) the fuse is good and the cd changer itself functions. Clarion lists error codes on its website and error 9 is supposedly "Weak RF try alternate frequency? any input?