I am replacing a light fixture with a Craftmade ceiling fan (https://www.amazon.com/Craftmade-TMPH44W5-Tempo-Ceiling-Remote/dp/B01D679HMA), operated by a wired remote control
I'm installing their wall remote control unit where the light fixture switch used to be. As per their diagram, I'm connecting the two black wires on the wall control unit to the two black wires in the box (one going to power supply, one to the fan).
What to do with the two white neutral wires in the box (one from power supply and one leading to the fan) - do I connect them to each other or terminate both?
It appears that neither the outlet box in the ceiling nor the switch box are grounded (there is no third wire and nothing behind the box except wood and drywall, it's a pre-war building). If that's the case, should i still connect the ground wires from the fan motor and the wall unit to the boxes or would that actually make it even less safe?