Originally Posted by -=Gib-McFragger=-
Not sure, AFAIK, it just has power and ground connections. Being it's wireless to headphones for audio, it doesn't need more than that.
That is what I would have thought too. I took a peek at the link Clay showed, and I'm wondering why the heck it needs to have a door sensor, an accessory panel wire, and a dome light wire.
The best idea Clay would be to see if you can see where the dome light wires travel as you might be able to follow the same path. The only hole you should really need through the headliner would be underneath the player so you shouldn't see it. I'm not very good with that type of wiring so I'm not sure what else to suggest.