I have a 4 switch application in my house. I am using a HA14 Intermatic switch via Z-wave. I have tried every wire combination I can think of with this switch, and tried it in two different areas (first switch an last switch). I am able to turn the light on and off with the HA14. I am able to turn the light OFF with any other switch, but unabe to turn the light ON with any switch but the HA14. The wiring diagram for the switch shows an "additional wire" in a 3, 4 and multi application. I am not sure if this is one of the travelers or a separate wire I am supposed to wire. If it is a separate wire that might be the cause, if it is one of the travelers I swear I tried all 12 possible combinations to wire this stupid thing. Any ideas?