I have a step by step discription of how to do this on a Vanagon and a Rabbit
is pretty much the same.  I also have those switches in stock if you need
one.  The page's address is http://199.217.188.30/disc2_frm.htm.  Look under
"Remove and Replace ignition switch in a Vanagon".
Hope this helps.

Thanks,
Ken Wilford
http://www.vanagain.com
John 3:16
Office (856)-765-1583
Shop (856)-327-0027
Fax   (856)-327-2242