check out
http://www.thelebos.com/ I got one of his kits, and it cost me less than buying at Radio Shack, and the local Radio shack did not stock the lights that were recommended, so I would have had to try to buy them on line anyway. The kit comes with just about eyery thing you need including the resistors, LEDs power supply,wire and even solder and soldering iron. the directions are easy to understand, and give you a couple of options on just how to build your moonlight about all you need to buy is heatsinks i you do not have any aligator clips around.
I think this was a great deal for the not too skilled DIY er, like me.and all at a good price.