I never really did a DIY, but took lots of pictures.
Sadly, I had a mishap with my photobucket account a couple years ago and lost every last picture.
There are some good pointers and links to the LEDs here -
http://986forum.com/forums/diy-project-guides/36014-changing-color-climate-control-switch-back-lights.html
Is your cluster pre-facelift or post? The older clusters are easy to do. The newer clusters require serious disassembly of the cluster and I've never done one.