Well, I dood it! After all the mad scientist stuff, I flipped the switch and had success! More on that later as I have had only a quick ride as of yet and I still have to build the helmet light. For now, some pics. I have a DIY series including sage advice and details headed to The Bike Lab, so I will let that cover most of the questions, but I will post up my overall thoughts here.
Darkness, fear me.