here is what mine looks like, its cracked....

Dealer, wreckers, ebay..

thanks i think i am gonna check out my dealer since ebay is no go.....he might have some parts

I would honestly skip it if it works,,,,I think your gonna find that that is not a cheap part as you probably cant just buy the tab/flipper/button (whatever you wanna call it), I bet your gonna have to buy the entire switch.
Ebay just had a lot of part listed for a sabercat 500,,,, I dont think they are the same though,,,,I did include the diagram from browns,,,


browns (http://www.brownsleisureworld.com/Parts/SNOWMOBILE/2003/2003Z370/HANDLEBARANDCONTROLS.htm)

Yeah you have to buy the whole switch. For some reason they dont show left hand side switch for the sleds but in the link Brian posted it is #39 and cost almost $30.00 CAD.

aight thanks guys sounds like a project for down the road...

Hey, it really doesnt look that bad,,,,dont worry about it,,,, or a thought (did you hear the bell go off,,,,or was it just me), anyhow,,, your gonna part out your old yamaha,,,, take a few parts to the local salvage yard and work out a trade,,,, I have a place down the road that I take parts to and trade for other parts that I need,,,,

you may find out that they have your seat that you are looking for and maybe a nice drive and driven clutch that they would trade you,,,,, never know,,,but its worth asking

Try Alpha-Sports.com and look up your specific model (http://www.alpha-sports.com/arctic_cat_parts.htm). I think your part goes for about $26 plus shipping.

Good luck,