Rick,

I appreciate your recommendation on opening a seperate thread.

The wiring topology for Colorado vNet is compatible with Clipsal, and therefore can work for a project already underway.

DIN rail technology has recently been offered by Crestron, and is available from other manufacturers in the US.  It's been a major form factor for Europe and the rest of the world.  The distributed topology wasn't  the reason for the decline of C-vNet.  Going away from black cars was considered a dangerous move in it's day.