There is also an aftermarket turn single switch to mount to your steering wheel (link below) that has a flasher lever on it. The one Jon talks about would look better but also will cost a lot more. Hope this help's I'm considering this for mine but for the turn signal part because the parts in the steering wheel broke and this is the cheapest and fastest fix for me seance I can no longer work.
Bob
pic of part
http://www.lmctruck.com/icatalog/cbe/full.aspx?Page=60price
http://www.lmctruck.com/scripts/mgrqispi.dll?APPNAME=WebLmc&PRGNAME=Welcome&ARGUMENTS=-ATK,-ACBE,-A36-4900,-A/icatalog/CBE/full.aspx?page=0060
