Hi have a 2 Switch plate downstairs for the hall light and the upstairs
landing light, and a single switch plate upstairs also for the upstairs
landing light. The upstairs switch only turns the landing light on and off
when the downstairs swith is in the 'on' position. Is there an easy way to
remedy this, so that both switches turn the upstairs light on and off?
What may have happened is that a switch has been taken off (say for
repainting) and wired back incorrectly.
What you could do is, with the power off, lift both plates off the wall
and note the number of cables and which wire from which cable goes to
which switch connection. Plus note the colour of the wires and if any
have different colour sleeves on or not. If you post those details,
someone may spot the wiring error and post a suggested solution.
Its old wiring - red and black. There are red wires going to the bottom
holes on the left and right. (left and right as you look at the side with
the switches on..). On the top of the plate, there are two red wires going
into one hole on the left. there are two holes close together on the right,
which two black wires are going in to. If anyone wants to have a stab at a
solution if there's an obvious error I'd be most grateful, have taken a
couple of photo's if that would help.
The photos would help - if you could stick them on a website (say a
share phots website) and post a link to them, that would do nicely.
But this is more what I had in mind by way of description:
Cable 1: Red > common terminal
Black> not connected
Cable 2: Red > L1 terminal
Black (with red sleeve) > L2 terminal
Bottom of stairs:
Cable 1: Red > common terminal downstairs light switch
Black> L1 terminal downstairs light switch
Cable 2: Red > common terminal upstairs light switch
Black > not connected
Cable 3: Red > L1 terminal upstairs light switch
Black (with red sleeve) > L2 terminal upstairs light switch
Hopefully the switch will have markings to show which terminal is
"common". Those are the important ones to identify.
Here's a couple of pictures:
Log-in details are:
The switch on the left (as you look at it) is for the downstairs hall light, the switch on the right for the upstairs landing.
Here's a couple of pictures:
Log-in details are:
The switch on the left (as you look at it) is for the downstairs hall light,
the switch on the right for the upstairs landing.
As you look at the picture and I say bottom left I mean bottom left of the
The two red cables that go into the bottom left terminal need to swap places
with the red cable in the top left terminal.
PS Unearthed metal lightswitches are not good practice
I've done that, and now the left switch operates the upstairs and downstairs
lights, switching between the two... The right switch doesn't do anything.
I'll dig out a torch so if you have any other ideas I'll have a go later
See this all to often but before can really help need more info.
1. the 2 gang switch downstairs does the second switch for the living room
have a 2way switch at the kitchen door?
2: How many wires are at the switch ?.From your posts it seems like 6 ...4
red and 2 black.
3: Are the wire all single or are they twin & earth or twin?
The switch you describe is standard ,what throws people is that one is
upside down, ie, the terminals across the top are sw1 comm sw2 l1 sw2
l2 whilst below are
sw1 l2 sw1 l1 sw2 com.
sounds complicated but simply when you flick the switch the com terminal is
connected to either L1 or L2 depending on which way the switch is pressed.
If the dual switch is 2wayed to the living room as well as the stairs then 6
wires will work.
Especially if they are 2 off twin red/black and 2 single reds.
The answer then would be single red in each comm and red/black in each l1
either way I have not come across 2 blacks in the l1 l2 terminals.
If you post more info I'm sure the group can sort you out.
You have the live feed crossed with one of the strappers in the downstairs
switch. Swap the wire in the terminal marked "c" with one of the other two.
If it is still the same swap the one now in "c" with the 2nd of the the
other two wires.That should fix it.
There are 4 wires coming out of the wall,- 2 black and 2 red. There is an
extra length of red wire crossing from the top left hole (doubled up with
another wire from the wall) to the bottom right hole (this extra wire is in
here on its own). Hope this makes sense, but should be visible in the photos
if any one has a chance to view them. The left switch is for the downstairs
hall light which works normally, the right one for the upstairs landing
Haven't a clue if they are single / twin earth. They seem to be just single
wires, in layman's terms..
I believe that on your wiring setup that one of the cables at the downstairs
switch will be permanent live. Use the neon screwdriver to find this cable.
It is the one that is live no matter what combination the switches are in.
This wire should go into the terminal marked COM for the landing light and
then have a link wire across to the COM terminal for the hall light. The
easiest way to find this wire is remove the switch, seperate all the wires
and there should only be one live one. Then make these COM connections after
identifying the permanent live
The other 3 wires are 1 for the switched live to the hall light and 2 go up
to the switch on the landing. Using trial and error connect each remaining
wire to a1 or b1 (whichever is opposite the com terminal for the hall
switch) in turn until the hall switch is working correctly. The remaining 2
cables go into the two terminals opposite the com terminal for the landing
light. If the landing light still does not work correctly then the upstairs
switch is also incorrectly wired up and we can start again on that one.
Cheers Adam, just returned from holiday and spent the day trying to get this
sorted. I fell at the first hurdle and failed to get the neon screwdriver to
light up.., but nevertheless I tried loads of wiring compinations which
resulted in all sorts of weird stuff happening, but not the desired result.
I think I'll have to get someone in afterall. Many thanks for your attempts
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.