Originally Posted by WaldenL
So do I understand that the "modern" way to wire a switch, where the switch isn't in the middle of the circuit, would be to run one 14/2 up to the switch and another 14/2 back down from the switch back to the same location, possibly the same jbox? The two neutrals would then be wire nutted in the box? Even when there's no pilotlight?
(Historical discussion follows)
What you described is technically and rigidly correct! (The neutral coming back is connected to the light being controlled.) But it is overkill, unconventional, and practically unheard of, and some inspectors won't pass it!
Normally the neutral accompanies its hot wire wherever the latter goes. But to avoid the overkill of what you described, the switch loop was invented. When the hot wire enters the light box and the switch is beyond, the actual correct way is to run just two wires or one two wire cable (the switch loop), non-white for the switched hot coming back from the switch.
With the advent of the switch loop, because premade two wire cables such as Romex usually have one of the wires white, we now have to make an exception to the rule that white is neutral. (White may not be non-neutral when conduit and individual conductors are strung.)
When neutral is needed down at the switch box, for example to daisy chain power from there to receptacles, we now run three wires or three wire cable, white for neutral, the other two for unswitched hot down and switched hot back. You may need this to provide this neutral for your little switch light.
Do not use the ground for the switch light in order to avoid having a neutral; that would be against code and can cause GFCI units to keep tripping.
It's strictly your choice whether to put the switch in the middle (power goes to switch).
OT: Speaking of GFCI units, when portions of a circuit protected by a GFCI and connected to its load terminals daisy chain on to the same junction boxes as portions of the circuit not protected by that GFCI unit, then two neutrals are still needed. One neutral is connected to the load terminal of the GFCI in question and the other connected to the incoming neutral and line terminal at that GFCI. These neutrals are not tied to each other anywhere.