Re: Question on routing rear window "dashcam" wire
it is easy to remove the lower IP, kick panel and the scuff plates (they are all designed to be removed again and again, which is an awesome feature for a highly modified product like ours)
The only "hard" part is pulling the rear quarter trim out far enough to drape the wire from the rear of the access door to the edge of the back door. Note, though, that the trim is separated where the color changes, making it much easier to pull just that lower portion out for wire running access.
I found that part easiest after removing the rear seat cushion and folding the back down. Would have been much easier if I'd also removed the seat back but didn't.
If you run the wire down the passenger side, the back door scuff plate can also be easily removed to get across to the driver's side.
Then, like PIC4GOD said, the hard part, getting the wire through the grommet begins. I removed the jack, its bracket, the back door trim and the wiring in that area. Then, if you completely remove the grommet and its contents you can pull the washer hose out to make room, run the new wire(s), and then put the hose back and re-assemble everything. This extra step is especially useful if the new wire has a permanently attached connector that is large.