Silly Question, How do I start this thing? 2000 Sportsman 500

I just picked up a non-running 2000 Sportsman 500 to clean up and refurbish as a fall project. I cannot figure out how to start it or attempt to start it. What I though was the push button start turns out to be a reverse override button. I thought maybe it was a keyed ignition but it just clicks once to turn on the power to the machine. The Red stitch on the unit has 3 positions and in the middle position lights come on and the unit seems to have power but in the far right position it just shuts everything off. Sorry to sound like a newbie here but I have owned Yamaha’s my entire life this is my first Polaris so Its just a little different.

Trying to trouble shoot what’s wrong but if I knew the starting sequence that would help.