Ok, so after 2.5 days of troubleshooting the Video Camera System feed into the HXr EFIS, with Eric Page’s help I finally cracked the code!

How you ask?  Good question!

And admittedly I’m not quite sure.  I did attempt to roll the configuration back to exactly how it was depicted in the diagram I received with the Mux.  I’m note sure if collectively my 3 configuration changes —along with serendipitous ham-fisted trial & error button-mashing— did the trick.

But here is a bit of an overview of both the cameras and some of what I did to get the system functioning as designed.

And with that, I’m calling it a very late night.  Back to the grindstone tomorrow.