ummmm Starcom, there your problem right there.....
Got around to troubleshooting it today. Pillion set up works, everything else works except my headset. (Of course, I'll be buying my 5th headset between 2 helmets on this system -- high quality Chinese wiring lasts about a month each, so my system really doesn't get that much use.)
Switched my Kenwood to battery power instead of bike power supply, to avoid all static -- all seems to be working. So now -- just pending me getting with Jeff tomorrow to get another headset shipped here next week, and I should have bike to bike communication again.