I see this is on sale at CT for $125.00 now.
To get hard wired power to the head unit was pretty easy, I used an 'add a fuse' plugged into the fusebox up under the dash on the Vibe. The power wire slipped behind the door moulding and headliner easily.
The hatch on the Vibe made the camera install more difficult than a car with a trunk, first the plastic covering the hatch had to come off:
The camera installed behind the license plate without trouble, I did have to drill a hole behind the plate to run the wire through to the transmitter, which I zip-tied in place inside the hatch. A handy power wire was there to tap into but then there was the problem of running a sensor wire up the inside of the hatch and down to the tailight.
This defeated me until I broke down and bought a cheap fish tool from Princess Auto to get the wire down through the hatch:
And through the rubber wire cover connecting the hatch and the body: