They should be there. If you follow the wiring for the rear dome light, it goes above the passenger side to the left of the sunroof. Then over the vanity mirror and back toward the center of the car and a few inches away from the map light panel.
I looked to see if I could grab them after I did my mod and use a shorter wire, but it looked like it would take too much effort for what it was worth. I'd say just tap into the rear dome light wiring if you really can't find the wiring up front.