I have spent about half a year on researching all kinds of leds for my led tail light project.
I really love these LED taillights from this topic, but jyst cant afford them.
recently finished it and here is the result.
I ended up using real Philips Lumileds HPWT orange/red.
tested several board designs:

and ended up using this:

circuit o the back:

in tail light


they are BRIGHT AS heck

here is the playlist on Youtube to the LED tail lights
http://www.youtube.com/playlist?list=PLMZFWI5dB4BpbvdzwVjkjVr5Ml8yjt4sNI love them...