If he is that inclined that means he is running short of experience (just thinking) becuase its very easy, there are 3 wires comming from stator coil and if you look at the wire diagram of 185 its a 3phase generator which can produce enough AC type from which a stable Volts from 4 to 18Volts can be created.. t
The only thing is the rectifier which will regulate it to desired volts, the sazgar rectifier has also the 3 wires and will connect bolt on (might need to replace the male female connector) and the other two (red and green) wires will give a stable 12~16volt for charging.
and it will al be done without even touching the point system ... as its a separate part of wiring completly..