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PostPosted: Tue Feb 28, 2017 1:35 pm 
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Hey guys

I had a bit of an odd situation.

At one end of my living room there's a 2 gang switch and a light, at the other end of the living room there's a 2 gang switch and a light. Both switches control both.

The light down the far end of the room works perfectly from both switches.
The light at the top end of the room works from both switches, but only if the switch at the far end is set in one of the 2 positions. Otherwise the switch at the near end of the room does nothing.

So, I took the near end switch off the wall to see if I could see anything untoward. Whilst doing so, a wire has come away and now I dont know where to put it.

What I have :

Gang 1 - Yellow : L2, Blue : L1, Red : Squiggle sign (I guess that means common/power)

Gang 2 - Yellow : L1, Blue : L2, Red : Squiggle sign

On top of this there is then another mains cable that just has red and black.

The red has been joined up with Gang 2 Blue L2

The black I dont know where it now goes.

Picture below.

I'm fairly sure it must have been wired wrong initially due to the issue mentioned above.
If anyone can point me at where the wires should go I'd be hugely grateful.


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PostPosted: Tue Feb 28, 2017 1:40 pm 
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:welcomeuhm:

Black goes to gang 2 L1 with the yellow.

Lecky off goes without saying.

Edit once you've done that check the wiring at the other switch and post back.

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PostPosted: Tue Feb 28, 2017 1:51 pm 
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wine~o wrote:
:welcomeuhm:

Black goes to gang 2 L1 with the yellow.

Lecky off goes without saying.

Edit once you've done that check the wiring at the other switch and post back.



Hey thanks for the quick response. Now both lights are on all the time!


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PostPosted: Tue Feb 28, 2017 2:01 pm 
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:scratch: :scratch: odd. Try the black in with the squiggle for now, but post back exactly what you have at the other switch.

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PostPosted: Tue Feb 28, 2017 2:19 pm 
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Ok, had to drop the car up for an MoT so I'll give that a try in an hour and feed back.

The other switch has completely different wires as I had to have the switch moved.
Happy to show you pictures but it won't relate in terms of colours.

Couple of questions - does it matter yellow is l1 in one gang and l2 in the other?

The red and black I assume is the mains power for the near end of the room and then the red blue black is sending power to the two lights?


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PostPosted: Tue Feb 28, 2017 2:23 pm 
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red and black are the permanent live (Red) and switched live (Black) all the others are for 2 way switching..

I'll edit this in a mo to show how how it (should) work.. although in your case it sounds like a junction box has been added somewhere which complicates things..

edit http://www.ultimatehandyman.co.uk/how-t ... -switching

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PostPosted: Tue Feb 28, 2017 2:55 pm 
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What I don't understand is the extra red n black.
Ie elsewhere in the house when I've changed light switches I've not seen any with 2 wires wedged into 1 hole.


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PostPosted: Tue Feb 28, 2017 2:57 pm 
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You only have the "extra" red and black in 2 or more way switching. Look at the link in my previous post.

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PostPosted: Tue Feb 28, 2017 3:54 pm 
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Exactly the same. all lights stay on all the time now.


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PostPosted: Tue Feb 28, 2017 4:01 pm 
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Ok, ignore me, I am a moron.
I did it on the wrong gang.
:wtf: :withstupid: :tool:

Ok I'm now back to where I started. Back light works fine, front one works fine providing the back switch is in the right setting.


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PostPosted: Tue Feb 28, 2017 4:59 pm 
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dubster wrote:
Ok, ignore me, I am a moron.
I did it on the wrong gang.
:wtf: :withstupid: :tool:

Ok I'm now back to where I started. Back light works fine, front one works fine providing the back switch is in the right setting.


OK I'm still trying to understand your set up. so you have 2 light points in one room which are operated by how many switches ?

You want to operate each of these 2 light points from either end of the room together and switch them separately as well ?

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PostPosted: Tue Feb 28, 2017 5:01 pm 
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One light at the front operated by a switch at the front and back.
One light at the back operated by a switch at the front and back.
(the switch at the back is actually 3 gang, and operates an upstairs light aswell, got that wrong initially)


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PostPosted: Tue Feb 28, 2017 5:05 pm 
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OK then. Pics of the switches with clear indication of which cables(grey) feed which switch and operate which light.

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PostPosted: Tue Feb 28, 2017 5:07 pm 
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wine~o wrote:
OK then. Pics of the switches with clear indication of which cables(grey) feed which switch and operate which light.


So pics of the back switch you mean? Pic of the top switch hasnt changed, except I put the black in where you said I should to get me back to how things started.

Will go do that now.


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PostPosted: Tue Feb 28, 2017 5:09 pm 
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Yes wiring at each switch. clear labelling of which switch operates which light.

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