There's a passageway with a light switch and a ceiling light at one
end. I'd like to install a 2nd ceiling light some distance from the
first, and also switch at the other end of the passage from the
existing switch, so that either switch can turn the two lights on and
Can anyone provide a link to a wiring diagram for such an arrangement?
I would search, but I don't know the correct terminology for such a
switching/lighting arrangement... If anyone can clarify, that would
after isolating from mains supply
one method is to replace the existing switch with a one gang 2 way switch
connect the incoming live to pin 1 and the feed to the lamp to pin 2
connect 3 core and earth one core to each of the 3 pins of this switch and
at the new switch which will also be a one gang 2 way connect the same core
to the same pin
This gives 2 way operation of the existing light without disturbing the
existing wiring nor does it matter how the original wiring was done as
depending on the age of the house there were different configurations
Further lights can be added from the existing ceiling rose by connecting
twin cable to the 2 terminals to which the lamp is currently connected and
routing to the new ceiling rose
All should be appropriately earthed
others more knowledgeable may have different ideas
This description is sport on, but uses a different way of describing the
connections that to that which you will find marked on most two way
switches. So clarify a bit - two way switches have terminals usually
marked L1, L2, and COM. The two wires on the current switch would now
connect to L1 and L2. So once you have added the three core and earth to
run to the other switch, the L1 and L2 terminals will each have two
wires in each connector at the original switch location.
Here's the circuit for the two-way switch - and includes an intermediate
switch for three or more.
0===========0 0===========0============= Line
| \ / |
C 0================================O C
\ / \ /
0===========0 0===========0============= Switch return
L2 Optional L2
The second ceiling light is merely wired in parallel with the first.
*No radio - Already stolen.
Dave Plowman firstname.lastname@example.org London SW
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