I currently have a 3 way switch set up. One switch at the top and one at the bottom of my basement stairs. I want to add two motion detectors in my basement. I keep forgetting the lights and want it turned off after XX time no motion is detected from either of them. I found these site....http://launified.org/installing-a-motion-sensor-to-an-existing-light-fixture/ ....and.... http://www.renovation-headquarters.com/wiring-multiple-motion-sensors.html don't know how to incorporate the two switches (3 way) that are already here. Thank you for any help. Note, I don't want the switches to determine weather the the motion sensors are powered or not, so if I turn the lights off, I would like the motion sensors to be able to turn the lights on if that's possible. If that's not possible, I definitely need the motion sensors to at least be able to turn the lights off regardless of which switch is turned on/off. Hope that's not confusing, thanks.