Big bear

I know this ain't sxs related. But here goes anyways. I have a 2010 big bear I got from a friend of mine. Won't start. Checked everything. No fire. Said only thing left is the CDI box. Before I waste money on a box, I was wondering if someone around may have one to try the box on there's, to see if it's bad. Local dealer told me that's the only way to test them.