Converting 3-Way to Parallel

[d0ityrslf]

I have a couple of lights on a 3-way circuit and I want to rewire them with motion sensor outlets and have them in parallel. This way, if either sensor activates, the light will be on.

I am seeking guidance on the right way to do this. I have read a bit on 3-way wiring and it looks like there are 2 black wires coming into the outlet (through the common) and I think that would get disconnected.

1. Is there a good way to keep the wires straight so that I don't make a mistake?
2. I think two wires will need to go on one of the switch terminals. Will there be room? The terminals on the switches seem a bit tight.
3. Is this conforming to any kind of NEC specification, to wire this way?
4. Is there a sensible alternative?

 

[littlespark]

1. The only way to know for sure which same coloured wires are which is by continuity testing when dead. Most multimeters will have a resistor setting. High reading, open circuit…. Very low reading, short circuit. Create a circuit using say, the ground wire as a return path. One traveller will take a feed from first to second switch. The other can carry the switched live from second back to first… if there isn’t one already at the first.

2. Very likely at the first switch you will have a hot from the supply, and need to loop from there to the same on the second switch. I’m sure the terminals are designed so they take more than one cable.

3. I would think so, although I’m in UK, but I see nothing wiring wiring this was.

4. Light bulb with built in sensor