I got the HVAC Indiglos today and installed them in less than 15 min. (Of course my dash was already apart from a different project...) Anyways, it looks great! Now I am totally 'Indiglo-ed'
HOW TO WIRE INDIGLO HVAC:To wire these, all you have to do is find the plug that is responsible for lighting the HVAC panel. It is located to the right of the center knob in the back. It has two wires, one a black one and the other a white with a black stripe. Splice the black wire from the Indiglos to the Black wire of the HVAC plug, and then splice the red wire of the Indiglos to the White/Black stripe of the HVAC plug. That's it! You're ready to go!
As far as where to put the transformer and control knob, that it totally up to you. I put mine underneath the panel that is below my steering column. There is a hole that you can put all the wiring through to that spot...