Ed -
Yep, both are in B-C. I've also tried Jumper W in and out, no difference.
I'm currently using the 18v strapping; I've also tried the 10v to no avail. I've never hooked them both up, I imagine that would cause the magic smoke to get out.
I've also tried the 2 digit dialing - i.e. 14 for station 4. When doing this, it presents 18v at station 4 for 1-2 secs, just as only pressing "4" does. The manual says somewhere this capability is there to support up to 20 stations.
I think the main problem right now is I seem to have the voltage required, just not the current (at least at the signal output - if I hook the buzzer to the 18v term on the 66 block, it buzzes, so I've ruled out the power supply as a problem).
For a laugh I even tried one of the 10v line bulbs instead of the buzzer; it won't even drive that.
Oh well, if nothing else I'm learning a heck of a lot about 1A2.
