I finally replaced my cruise control switch yesterday and it went well.
The bolts behind the steering wheel holding the airbag and horn device need a star drive and the bolt to the steering wheel needs a 10mm alan wrench and a breaker bar. Mine was locked with lock-tight and took a bit of effort. After that the steering wheel simply lifted off.
You also have to remove the underdash to get to the other end of the plug. That was quick for me because I've done it several times now.
'87 300TD Turbo