instrument wiring, pins etc.
 

I want to change the interior lighting. Afaik, those who have done it have kept their information under wraps so I'm going into this blind.
After combing through the two available wiring diagrams, I can't find any info on the pin designations in gauge cluster, window mover assys and so on.

Is there any file, info or guide I've been missing? I'd really appreciate at least knowing where the pins for current and ground are (and preferrably the height of the current, resistance used and so on)