In my bathroom I have a dual switch box. The left side controls a light, the right side controls a bathroom fan.
I'm trying to convert the light switch (left side) to a Switch with LED Guide Light.
The right side (fan) I will replace with a simple Decora switch.
The old light switch (left) has a black, red, and copper wire.
The new light switch w/nightlight apparently wants a white/neutral wire, as well. Is this white wire mandatory?
I see there are 2 white wires (one from each initial bundle source from the wall) that are connected together. Should I somehow use one of those?