GMC Signal Switch

[Andice]

OK. I am almost certain that my factory issued turn signal switch is bad. See this:

http://67-72chevytrucks.com/vboard/s...d.php?t=438282

I want to replace the switch but there are some concerns. My truck is a '64 GMC Fenderside. Do I need a '63 Chevy switch? Most, if not all, of the '63 Chevy replacement switches appear to not include the horn contact, upper bearing, etc. Is it as simple as snapping my parts into the replacement switch? Anybody done this?

I will try to clean the contacts on the current switch first, but I am trying to get some ideas in case the switch is shot. Thanks!