Lighting circuit on mini bike

Hello new to the forum, I want to add a 12v lighting circuit to my mini bike headlight taillight and two led strip lights under the bike. the battery I want to use is a extreme magna power sealed battery 180cca 12ah. I want to add a small friction generator to help keep the battery charge, the fricition generator is rated at 12v 6w. My question is how do I wire this all together. The mini bike has 16" tall tires the motor is governed to 3900 rpm and top speed is 30-32 mph. Thank you for any help.