I'm in the same boat as you. The wiring diagram I found here isn't a match to what my truck has. I have the same wires you have pictures. I'm trying to add the lights and the compass module.
Ok, so i installed mine today, no compass or LED just the courtesy/map lights. Was really pretty simple, and took about 1 hour. Wiring wise here is what i did:
1. Ground i spliced into dome light ground just above green connector (too half)
2. Courtesy pwr spliced into same place but the other wire.
3. Map lamp pwr i splice into the yellow/ligh blue wire on bottom side of green connector.
Thats all it took for just the lamps. I did make a template out of cardboard to cut the headliner which came out perfect.
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