I picked up one of those halogen yard lights from Home Depot, with the 20W bulb. I removed the part that is supposed to go into the ground--the "spike"--and put it into the vise. I wacked off all but 2mm of the spike, leaving a bit of material and the "round" portion that would normally stop one from pushing the spike further into the ground. On the side with the most material, I removed all of the spike material--but left three sides of the "spike".

Then, I removed the front reflector bracket from the bike, and placed it against the round area that was now flat. I located the hole dead center, marked it with a center punch, and then drilled it out so that a #6 or so screw would go through (first bolt I found on the bench). The reflector bracket thus is screwed to the remains of the spike; and the three remaining sides of the spike keep the works from spinning around.

I was pretty happy with myself, so I quickly slapped some Anderson Powerpoles onto the light, grabbed a 7Ahr battery and threw it into a fanny pack, and took it for a quick spin. Wow, 20W simply blows away the dual Wallyworld lights I ran years ago. I might have to try bulb swapping, maybe find a more focused one--but the stock 20W one makes a huge cone of light. I bet a second super narrow focused light for fast riding would be a great compliment; but I think it might be just fine for 15mph or so.

I think I have a pair of ok 7Ahr batteries, and I tend to not ride for more than a hour, so I'm not too concerned about reducing the output down (only need 1 battery at a time). I'm not sure where to mount the battery yet; what I might just do instead is run the wire down the frame and just wear a fanny pack. The Powerpoles disconnect real easily, so it may not be a problem in a crash situation. Or maybe I'll find the right bag for this eventually.

Now time for the battery and rear light.