Thanks for all the info and pix! Installed my Passport last weekend with ease...
Several (perhaps slightly obvious) things that made the process even easier:
Ran the cord starting at the detector end so that all the slack wound up behind the glovebox. I zip tied this off to one of the wiring harnesses so that the in-line fuse holder doesn't rattle around.
I got a set of blue plastic interior trim tools (from Amazon) and these made stuffing the cord behind the headliner and door seal a snap.
When I used double stick tape to stick the remote mute button to the bottom of the dash, I could see the white from the tape and got annoyed. Unmounted it and took a back sharpie to the sides of the tape. Much happier...
