I'm just trying to run a hot and neutral from the attic fan to this. So, I guess I have two options. In both options, I run the hot to load and other hot. But in option one, I tie the neutral to that neutral and hot. Or option two, I tie the fan's neutral to the cut-off neutral.
I'm trying to avoid prying up the attic floor, peeling up the insulation, and disturbing other older-than-dirt wiring.