About your ''A'' question, we need more info. What does your instructions say about that wire? Is is just to illuminate your AC-control unit? If so, you should find some orange wires underneath the dash that you can hook up your wire to, but, again, let us know what your instructions say. About your ''B'' question, I wouldn't strip a wire from the steering column. My first choice would be to hook up to the fuse box. I'll see if I can take a picture where to hook it up.
Robert