In article ,
says...
In article , Bruce says...

The pilot light in the switch is between the two travelers (you can
use multiple lighted 3-way and 4-way switches in the same circuit),
and they send the pilot light current through the ceiling light
filament - remove that big lamp, and all the pilot lights in the
switches go out.

Right, but the present question is, how do they implement
the pilot light at the four-way switch? Seems to me they
really would need two neon lamps there to make it work.


If you connect a single pilot light between the travelers
on either side of the 4-way switch, it will be in parallel
with the the pilot light at the 3-way wired to that side of
the switch, so only one lamp needed at each switch.

I went thru the exercise of following the flow thru the
various states of the switches before seeing the obvious.
Doh!

Ned Simmons