Wiring problems!!!

[st500]

hi

i have a 125cc pit bike, its the older style, about 2 years old id say, its just the kick start version, no battery etc but im wantin to put a light on the front so need to get a 12v supply.

ive removed the plastics and found a green 6 pin plug near the back of the bike, the wires come from the side casing, do i just need to get a voltage regulator to plug in to the spare plug or is it more complicated than that???


thanks

tom