Help with MS-OPS2 installation

[10basetom]

I'm preparing to install a MS-OPS2 sensor light switch into my bathroom in a 1979 home. The instructions say this switch requires a ground wire, but I don't see any bare copper wires in the switch box:



There are unused neutral wires and what looks like two brown wires, with one brown wire going to the fan switch. Can this brown wire by the ground? Also, would it be okay for me to connect both the green/white and bare/ground wires from the Lutron to the switch box's neutral wire?

[10basetom]

I couldn't find the Edit button...

"Can this brown wire by the ground?" -- I meant to ask: Can this brown wire be the ground (since brown is kind of similar to copper in color)?

[Kenneth P.]

Hello! The MS-OPS2 switch requires either a connection to neutral or ground. If you have a bundle of neutral wires in the back of your wall-box, tie in the white wire from the MS-OPS2 to that bundle. If you connect the white (green-sleeved) wire to the neutral-bundle, do not connect the bare silver wire to that bundle.