I have a dealer installed factory AM//FM Cassette out of a '95 K75RT. It makes the speakers buzz but does not appear to "work". The cassette does not appear to work either. But, it does not eat a tape!.

It may be fixable for someone who can work on stuff like this.
It's all here, including the owners manual. I do not have any security code.
Mainly posting to see if there is any interest. If anyone is interested, I'll post pictures.
Tom