Jeffers,
Once I get unlazy. I can quick write something up. The camera of choice is the Rydeen Miny. I got a GCOM (Same company, longer warranty) This camera operates of 3.3vdc by means of a regulator, so the 6vdc output from the headunit is perfect for it.
I drilled one hole in the trunklid for the wire (+/- 1/4") painted the bare metal with nailpolish and ran a grommet through. I then routed the wires through the trunk, down through the passenger side behind all the kick trim. Routed behind the glovebox, and to the stereo. It was a small jumper wire (to ground the input) a video + and common, and a 6vdc wire.
I am waiting on the right connector pins, once I have those, I will let you know. I sourced them out last week, i am just waiting for them.