Welcome.
This is a common problem with a releatively inexpensive fix (new switch).
Take a look here
turn signal switch quick fix pictures
(pay atention to anything posted from some JW workshop
)
See if this link works to the part.
http://www.pelicanparts.com/cgi-bin/ksearch/PEL_search.cgi?command=show_part_page&please_wait=N&make=POR&model=911M§ion=SUSstr&page=5&bookmark=24&part_number=911-613-305-01-M78
The search feature works well also.
Search for removing the steering wheel.