Thank you, Jab! I've printed off your post, and a copy of the PDF. It looks like fun!

Neat post about the innards of your charger. It's a bit more involved than my home-brew version that I have on my bike (see the "Total Geekiness" folder for all that.) It seems to be a bit... overkill.

Have you opened up the Nite Hawk's control box yet? Ever since I tied my bike's electrical system into the power connection for my NH, my headlight will occasionally extinguish if I hit my brake. I'm becoming amused and annoyed at the same time. I suspect I could enter that box (heck, I've already voided the warranty) and find a complex circuit there that could be ripped out, and a simple on/off toggle switch to replace the momentary NO switch they have now. Then no more trouble with the headlight turning itself off!