Multi Function Switch. Get from Bill Jenkins.
www.teamfordparts.com
Here is a thread on the MFS.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=702229&page=&view=&sb=5&o=&fpart=1&vc=1
From Ford CD
1. Disconnect battery ground cable
2. Remove two screws and upper steering column shroud
3. Depress the multi-function switch locking tab.
4. Slide multi-function switch up and off of steering column.
5. Depress locking tabs on multi-function switch electrical connectors and remove from the multi-function switch.
Autozone has some schematics.
http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/d6/05/0900823d801bd605.jsp 
