Unfortunately there are only 2 wattages that can be done to the LT500 standard is 130 watt, which works great using 55/100 watt bulb, right at the crack of the throttle they light up, then there is the 200 watt wind that you need to be almost at 4500 rpm for full brightness, anything below that the lights will go dim, the hot setup if you do a lot of night riding is a HD system that requires a battery system to keep the ballast (transformer) at 13.5 volts due that the ballast need a constant voltage, means still requiring rectifiers, and a wound Stator to handle the amperage load of about 16 to 20 amps, Being we run stators and not alternators you will have to charge the battery also.
I am reading more about AC/DC ballast kits (built in rectifiers and transformers), will post soon on this.
As for winding these stators let me check around, I used to sell the magnet wire they use to wind these stators to Ricky Stator and Pro Light way back in the 90’s and I am in contact with other custom transformer winders, see if we can find someone for the site.