yellow = ~12VAC
yellow/green = ground (engine and chassis)
white = low beam
blue = high beam
As to full loss, I mean that a portable battery carries all the load and just runs down until it's flat (typical bicycle use). I use the 8 cell ballistic battery mounted in the stock GG location. It is the largest lithium ion battery that will fit in the available space. I wanted the maximum cranking power for the estart. I made up a new wiring harness and used the white wire from the stator as my power source. The yellow stator wire also connects to the reg/rect but is not used for anything. Thus everything on my bike is DC powered. This was done because the PWM module requires DC.
When I did the work early in 2011, there were few choices for LED lights. Since then lots of choices have become available. Some style of unit with selective emitter combinations (like your bulb) would be easier to do than what I installed. I definitely wanted dual lights.
The GG stator has rather feeble output when it comes to adding electrical accessories. I also put on Oxford heated grips. I think their maximun draw is 4 amps. The LED lamps also draw about 4 amps (100% setting). So I can run either accessory at moderate power, but the battery will slowly run down if use both together. The same thing happens with either one at full power. Both at full power would run the battery down quickly.
So if I night ride with the lights at full power, I'm good for about an hour before the battery is too low to crank the engine. It's not a big deal since I have the kickstarter. None of my buddies are keen on night riding, so I don't get to do it often.
The guys I ride with are 10-20 years younger and if I can get 60 miles of forest riding out of them, I consider it to be a good day. If find a lot of guys will go out and ride hard for a few hours. I prefer to ride steady and spend the whole day. Once the temperatures drop in the fall, most guys just put their bikes away.
This year, winter came early and I used the grip heaters for the first time. This really showed up the lack of electrical power. So I will be installing a 250W stator next spring.
http://stores.advmonster.com/led-lights/ model 30 is closest to what I have, although mine are the flood pattern. The model 30 housing is nice and compact, and I wanted the parallel sides so it was easier to machine up a mounting clamp. The model 44 is the current replacement for my lights. It has 4 emitters instead of the 3 that mine have. I'm not sure if it is the same housing.
http://www.lights.skenedesign.com/IQ_175.shtml is the PWM dimmer unit.