Geez, I don't know. Mine came right off and went right on.

I forgot to mention earlier. Be sure that the bearing that goes on the back of the steering wheel and helps position the horn ring is on correctly. That could also mess up the horn.

__________________
1981 300TD 310k miles
1970 280sel 172k miles
1966 230 Fintail 162k miles

"Where are we going? And why am I in this hand basket?"