I believe the red goes from one stock switch to the other stock switch so that either one can turn the light on or off by flipping it either way...if that makes any sense.

I my case I don't really want the other switch to have any control over the light....only the new motion sensor switch.

Solar tubs are a great way to light a room. My Va. laundry room has no windows but it has a solar tub. No light needed during the day!

I gave up and had a solar light installed.

Caution!
 

I suggest you hire an electrician who knows. You are working with a three-way switch set-up. You could start a house fire.

As posted above, it's happening! Thanks :)

Below is the wiring for the original 3 way switch. Note how the neutral goes directly from the box to the light and bypasses the switch. In your switchbox, the red wire is the traveler and one of the other black wires is also a traveler. The load (or line) was the wire that was connected to the black screw on your 3-way switch. The switch won't work if the black traveler is connected to the black screw.

You installed a 2-way switch, which is intended for only one switch controlling the light. The reason you have to connect the white wire to the ground is to get some power going through the switch to keep the motion sensing active, even when the switch is off. That's fine. It's designed that way. You're not going to cause a fire.

You capped the red wire, which means when the other switch sends power through the red wire the light will be off. When you flip it to the other position and the power goes through the black wire the light will be on because the motion switch senses you and closes the switch. If you leave the 3 way switch in that position all the time then the motion switch should work as you want. However, if the switch is set in the other position (light is off), I can't see how the motion switch can turn the light on. No way to complete the circuit.

Ideally you would install a 3 way motion switch that does not require a neutral. I believe the one you found on Amazon requires a neutral.

We solved this problem by purchasing a plug-in motion detectors at Home Depot.
The picture attached was taken in pitch black darkness.

And the skylight helps at night how?

With professional help...all set up and working perfectly :)

The diagram above in post #46 is exactly the way it is set up stock. The solution for my switch was...

Combine the line from the box to both the red and black traveler wires to the other switch. This keeps the motion switch in control of the light regardless of which way the other switch is positioned and provides power for the light.

Black to the black going to the light.

Bare ground on switch to bare ground in box.

And he dug out those white wires buried in the back of the box and hooked one to the white wire on the switch. This completed the circuit that provides power to the motion switch (both the switch needs power and the light needs power, the white completes the circuit back to the fuse box that provides power for the switch)

I hope this makes sense! Thanks for all of the comments :)

Joe

I put 2 of those type light with motion detector in garage. I would check

Looks like you disconnected your 3 way switch. There must be another switch for the same light fixture that is not working after you altered the wiring. Put it all back the way you found it. 😊👍

Yes as described in post #1 there are two switches to this light and we wanted the other switch to be disabled so that no matter which position it is in the motion sensor controls the light....which we currently have.

After living with the motion sensor for a couple of days....we're not goin' back! It's really nice!

Joe

I bought a motion sensor nightlight that plugs into the wall socket in the laundry room. Lowe's, about $10. Works great.