Yep, vouch for the horn cover thing...just posted a question in the Vic Forum regarding that.
I have non airbag, took one screw out, phillips head, from behind the steering wheel...then just pulled..as with most Plastic parts on the skyline it just clips out. The screw was really annoying to undo because you can't see behind there, and it's a small screw but a big hole...(no phallic intentions)
I had an annoying rattling in the steering wheel when I turned corners and it was the plastic thingy behind the horn pad, it must be really fragile beacause I hardly use the horn. I removed all five pieces it had broken into and now all is well, but I can't find a new one...
Paul