I finished the project and it does work okay. Only issue I really don't like is that the mirror is heavy and it shakes a bit when the car is idling - far more than the OEM mirror. Another issue I had was mirror reflection glare on the mirror when the camera screen is active in backup mode. The mirror is a reflector and really doesn't make a good location for a backup camera screen - but is better than not having a backup screen at all. It does work. I cut down some of the glare by having the rear window tinted a little darker.
The mirror I used came from Amazon.com and is "BOYO VTM43TCA." For the mirror signal wire, I tapped into the reverse light wire at the kick panel (it's a small red wire on the bottom of the wire bundle that goes from the kick panel towards the back of the car along the door jam. I used an existing ground point under the dash for the mirror ground connection. There's a third wire from the mirror that goes to Accessory power. The mirror wire goes down the driver side A pillar. I figured out how to remove that pillar, so I was able to run my wires right along side the existing wiring that goes in that location.
For the camera, I got a tiny CCD camera from ebay. A CCD camera will normally produce a better picture than a CMOS camera. It's fastened in the middle right under the chrome trim that goes across the trunk lid. It is attached using two screws that go into that plastic part under the bottom edge where it's mostly hidden. I ran the camera wiring under that chrome trim and then into one of the license plate light holes (I cut a notch into the clear plastic lens then sealed around it with RTV sealant). From there, the power wires are connected right next to the actual reverse light that is in the trunk lid. The signal wires were run along the left side floor of the car where a wire bundle is. If you pull off the plastic trim between the pillars, you'll see the wire bundle - I just ty-wrapped my wires to that bundle all the way from the trunk to the kick panel.
