Converting one to two gang, two way light switch

[price1981]

Hi,

I have a light in my hallway and a light on landing. Light switches at bottom and top of stairs.

The light switch at the bottom is two gang; one switch works an outside light, the other works both the light in hallway and landing.

The switch at the top of the stairs is one gang and works both the light in hallway and landing.

I want to change the downstairs switch to three gang, and the upstairs to two gang, so that I can switch the two lights on/off independently of eachother.

I've installed the new switches, mirroring the existing wiring, such that downstairs I have a three gang switch with two switches operating as per the previous two gang, and the third switch currently unwired. Upstairs, I've installed the two gang but only wired to one switch.

Downstairs
(sorry, it's a bit like spaghetti and hard to photograph - have described underneath)

downstairs (1)

• price1981
• 3 Sep 2017

Downstairs (2)

• price1981
• 3 Sep 2017

Switch 1 (outside light)
red wire from right hand grey cable -> Com
red wire from second right grey cable -> L1
red wire from Com to Switch 2 L2
L2 (empty)

Switch 2 (inside lights)
Yellow -> Com
Blue -> L1
Red from left hand grey cable (same as blue/yellow) to L2

Upstairs

Upstairs (1)

• price1981
• 3 Sep 2017

Upstairs (2)

• price1981
• 3 Sep 2017

Blue to L2
Top left red to L2
Yellow to Common
Bottom left red to L1
Top right red to L1

Yellow -> Com
Blue -> L2
Red from left grey cable -> L2
Red from bottom left -> L1
Red from right grey cable -> L1

So that's the setup, is anyone able to confirm if/how I can wire up the spare gangs to have the inside lights operating independently?

Many thanks

 

[flameport]

Not possible without installing additional cables between the switches and possibly elsewhere as well.

 

[price1981]

Thanks for the reply, feared that might be the case after staring at it for a bit this afternoon.

 

[EFLImpudence]

You appear to have an extra wire.

I don't suppose the outside light only works when the hall and landing lights are on, does it?

 

[price1981]

No, works completely fine on it's own

 

[EFLImpudence]

Ok. Just an idea.