I contacted lutron and they sent me a wiring diagram for the 3 way and i understand how to put the switch in that circuit, the problem is i have a 4 way with an actual 4 way switch in the middle, that is where i need the motion sensing switch. the original switch has 4 wires 2 white on one side and 2 red on the other. I watched the video and that looks ok but if i dont have an actual black wire i am confused. 2 wires will have to be laid to my sensor switches blue wire, but which 2? i am assuming it would be the ones from the other 2 switches blue terminal (ma-as companion switches?) then which wires connect to my 2 black sensor switch wires? they sent me a wiring diagram but it shows how to wire the sensor switch up on one end but not exactly how to replace a 4 wire switch that is in the middle position? i also may have another 4 wire switch too if so will the ma-as switch replace 2 end 3 ways and 1 middle 4 way and the sensor switch replace the other middle 4 way?