On 02/19/2017 10:32 AM, philo wrote:

[snip]

Unless one wanted to use relays and design a logic circuit, the only
practical way would be to use two bulbs at location "B"

That way a three-way switch at each end could be used


Bulb A tied to B(a) Bulb C tied to B(b)

So now you have 4 bulbs, in 2 parallel connections. Both 3-way? Now you
have FOUR switches.

Or do you use regular switches? That might be the way I choose (although
I'd still prefer the DP switches). It's not 3-way.

--
Mark Lloyd
http://notstupid.us/

"All religions are founded on the fear of the many and the cleverness of
the few." -- Marie Henri Beyle (Stendhal)