You may recall I found and tested an installation that tapped power out of the mirror. Well while it "appeared" that all worked well with Version 1 of my wiring scheme I deleted the referenced post and instruction sheet I made up because as it turns out something odd happenned; when the vehicle was placed in reverse the power to the V1 cut out. I tried to find a different lead in the mirror connector pack to which that did not happen but to no avail except a non-switched lead. So, I undid that install (which has a great side benefit in removing all that wiring from the backside of the mirror)....
OK, here the simple new solution, where I should have started from the beginning:
1. Place V1 high in windsheild so that it can "see" back as well as front. Use 8' flat cord and run this line to under the passenger seat by pulling the edges of the plastic trim along the way.
2. Mount the remote unit wherever desired. Run its flat cord along the underside of the dash so that it meets up with the cord from the head unit under the passenger seating.
3. Join these two cables using the hard wire "junction connection"(the one with 12v+ and 12 ground [red and black] hard wire leads).
4. Open the fuse panel in the center console by sliding the front passenger seat all the way forward and folding the seatback forward,
5. Tap 12V+ from a switched fuse, I used the one marked 'ignition'. Run the wires under the console edge.
6. Wire the black lead to a secure ground connection. I found a handy grounded hole on the seat track that did not interfere with anything.
7. That's it, you're done, and it looks clean, and switches on-off with the key.
8. Even though when the attached photo was taken it was wired up the old way I have included a photo showing where my two units are located.