You have the right idea of using a rectifier to convert your ac unregulated voltage to regulated dc voltage. To use your rectifier correctly, you need a floating ground coming from your stator.
I have written a walk through on this process pertaining specifically to a 350x but the overall process is the same.
https://lookaside.fbsbx.com/file/Hon...gnR6IqMY7g9nQQ
Let me know if the link doesn't work, I'm attempting to do this from my phone. If it doesn't work, send me a pm with your email address and I'll email the file to you.
85 Kawasaki KLT 160
85 Kawasaki KLT 110
82 ATC 70
2000 Scrambler 500