Well i have just used a Shindengen sh530-12k from a kowaski (yep thats right) off a kz750? six wire regulator, three yellow input wires to the three outputs from the stator, red to red, black to ground on the frame did not hook up the brown sense wire from the regulator, Charging system voltage @ 2500 rpm 13.71v and @ 5000 rpm 13.84v with the high beam on yes i know it is not too high but all it has to be is between 13.5v - 14.7v it has kept it going for three days riding back and forth to work 33 miles each way.. short trips also. This regulator is between 2-3 times larger than the stock gs850gz R/R but the bolt holes are not the same use one original hole and put a locking nut and a washer to clamp it to the bracket near the other hole, you must use longer bolts because this R/R is BIGGER you also may have to lenghten the wires (I did have to) for your application, be sure to solder and heat shrink the wires, also please check the rest of the charging system first ! and then its GOOD TO GO.