Hey!
So, I've been trying to figure out the pinout and from what I understand it states that I should plug the 28VDC into the a and b pins on the J2 connector but those connectors are bridged over each other (they share the same cable). However, it looks that those pins on the J1 may be the one's I'm looking for (although the pinout says that those are not used). Am I reading the pinout correctly?. I also noticed that, in the pinout all the lower case letters have a "_" below them and in my connector, only a few of them have the "_". Is that important for some reason?.
The other pins I found (E and D of the J2) are correctly stated in the pinout so, just for the fun of it, I reassambled the CDU to see how the lights looked like and I have to admit that they do look pretty cool haha (I would post a photo but the site doesn't let me do that yet).
I'll keep you posted when I find any other clues and as always I would appreciate any other info anyone might have!