Okay. I was able to add the devices by moving the On/Off module to the same circuit as the 2412 PLM.
Regarding the AP, I'm pretty sure that my electrical legs are joined as I have two access points and also have the legs joined at the dryer (a holdover from my X10 days).
However, I did want to be sure I was covered so I upgraded to the 2413 dual band PLM and also added 5 more dual band devices around the house (at least 1 on each floor and one near (~15 feet) the open/close sensors).
So, here is where I am at. All devices have been added to the ISY. The two motion sensors will show motion (on/off display) within the ISY admin panel but the open/close sensors do not seem to respond to the 'query' command and also the status does not change when the open/close senor is activated/deactivated.
Any additional help would be appreciated.
Thanks!