Sure, Jeff! I went to eBay and bought this tail/brake light. Plus four of these clearance marker lights for use as turn signals. I got the pigtails, chrome surface mounts, and rubber grommets for the markers from the same seller.

I used a 5 watt Luxeon bulb with a diffuser lens for my headlight, and a buckpuck with that. Both of those are mounted inside a plumbing tailpiece - it looks a bit like a pipe bomb, no?

For the flasher, I used one similar to this automotive turn signal flasher. It is specifically designed to handle LED bulbs.

The control box is from Radio Shack, as is the power switch which is illuminated to let me know the system is on.

This sealed on-off-on DPDT switch controls my turn signals.

Finally, I am currently using a 12v 5Ah SLA battery for power. So far it has run about 2 - 2 1/2 hours without needing recharged. The problem is that the battery weighs in at 4.1 lbs!! So I have purchased a li-poly (lithium-polymer) battery which is 14.8v and 3.2Ah. It weighs in at about 12 oz, so it will be far lighter! The only concern I have is that there are lots of warnings surrounding these batteries of fire hazard. Scary, but I think I'll be okay.