ok, lets take a few steps way back. you have to understand the conversion before you make it. why are so many mopeds made before '80 wired in a screwed up way. there are two reasons, the law and physics. motorcycles need to run the tail light when the vehicle stalls out for at least 20 minutes. regulators of the day were lame before the transistors. thats why all these wiring diagrams are the same. full wave ac headlight, half wave dc tap to a battery then to the tail light.
all these conversions are the same because there are actually only two conversions depending how the lighting stator is wired.why? because there are only two r/r's half wave and full wave. the stator that needs a full wave conversion is like the posters. three wires coming out of the stator yellow, green, black, headlight, tap for tail light, ground makes for an easy full wave conversion. the other stator has two wires but the ground is internal. because of how its wired you have to run a half wave r/r.
there is some theory to know. its a simple rule. stator coils are added in series. the tech lingo is single phase. thats why nobody uses the tap when doing these conversions. the yellow and green are already in series. nothing to know except all the power runs through the headlight wire when the tap is n/c. this wire is unused in either conversion.
lets review the power out of the two different conversions:
full wave=full power. three stator wires. yellow,green,grey. the original power ouput is yellow+1/2xgreen. after the conversion the power at the yellow wire is yellow+green. this is more power than stock and easily regulated with todays transistors. no led's needed even with a 6v to 12v conversion.
half wave=1/2 power. two wires yellow,green. total power output before the conversion yellow+1/2green. after the conversion, 1/2yellow+1/2 green. yes its a big loss of power. why do a conversion that has almost half the power than stock? because todays led's use approx 1/8 the power than the stock lights. won't work with stock bulbs but led's will work fine.
wiring is simple everything now runs off the r/r + terminal. the cap goes between + and ground. keep the battery and skip the cap if you want.
nice diagram but I'll win this pissing contest! just like Donald trump I went to the Russians for trade secret diagrams. (edited)