http://www.youtube.com/watch?v=hMqLT-4ezzk
i use green lights that work great with my green transparent nocks.
Also don't use a cut off nock for inside the arrow, 1/4" wooden dowel cut to 1/4" long pushed in with a drop of glue dripped down onto it works great. Last one I made I actually used a pencil eraser into the shaft. I also don't drill out the end of my nocks. My green ones are plenty bright.
Can find the Thill or Rod "n" Bob lights in green, red, or orange/yellow.