dimmer-switchelectricalswitch
This is the original wiring, once I saw it I decided to not touch it. I don't know enough about this to make guesses. I know the bare/green from new switch would wirenut tie to the existing bare, but am at a loss how to handle the other 3 connections.
This is a single pole, controls light at top of garage ceiling. There are several other power outlets in the garage, which I'm guessing this acts as a sort of pass through?
This is the new light switch/sensor.
I suspect the white wire with the stripe is actually the switched power from the switch. Putting together what you have said, I think your setup probably looks something like this:
Where the green wire is the ground and the red wire is your wire with the stripe.
If this doesn't match up with what you are seeing, then let me know what looks wrong and I will try to figure out how it is setup.
Wiring diagram for Leviton PR180 3-Way Wall Mount Occupancy Sensor.
Best Answer
This looks like a MS-OPS2H-WH. It doesn't require neutral so the wiring it simple.
For the two back wires that currently go to one terminal on the old switch, use a wire connector and twist those together with one of the black wires from the occupancy sensor (does not matter which one).
Connect the other black wire from the other old switch terminal to the remaining black wire from the new occupancy sensor.
Connect the green wire with the bare copper wire in the box.