Therefor I decided to install an aftermarket auto-dimming rear view mirror. And since I was already on that path, why not choose one that has an LCD built-in, buy the OEM rear-view camera, and have that feature as well ?

And I made it so! This mirror was bought, and this OEM camera was also purchased for my C5.
After waiting for the parts, and a bit of misunderstanding about the correct base/button (due to me not checking the correct button before-hand), which meant a bit more waiting for the correct bracket to arrive, the operation was a complete success!!!! And with excellent results, I might add.
These are the complete parts

We begin with the stock plain mirror

We install the ??? camera in place of one of the rear licence plate lights

After wiring and connections are made, the new mirror is installed in the stock location, using the stock button and the correct bracket

New mirror in operation. Auto dimming via 3 sensors, automated switching to the "camera" video input when reverse signal is sensed, and we can also choose manually to change to the "video" input, should we have another video source that we need to project on the LCD

Almost better than the stock auto-dim mirror, with more features, and a complete stock look!!! Excellent, If I might say so myself
