Dave:
Thanks for your prompt reply. It looks like I need to wire all my switches, uncouplers and some accessories to my AIU's, prior to getting your new system working.
I will be responding to your email address directly, after I update my layout drawing to show all the block separations, and add an ID number to each of my switches and uncouplers. I hope to have this done by early next week.
Looking forward to having an electronic control pannel in my train room.
Joe K