Light switch wiring

[midgetman]

I have a confusing wiring. It's a 70s council house.

Hall way has two switches one single , one double.

The double and single switch the hallway light, however in both switches there are three wires red yellow blue. This two way switching works fine.

The double switch in hallway also switches the landing light (only upstairs light switch seems to work) .

The double switch downstairs has only one black and one red with a feed from the adjacent switch.

Upstairs on landing has red, yellow, blue.

Continuity from downstairs is black to blue upstairs. Red to yellow. The red upstairs is the switch live.

Hall way double switch

Hallway single switch

Landing switch.

Both ceiling roses only have 1 brown, 1 blue.
Downstairs Black is in l2 and red is in common with feed from adjacent switch.


Upstairs on landing yellow is in common. Red is in l2. Blue is in l1.

I have been told it worked before switches were replaced. My head is hurting. If you have any input that would be great. Lol

 

[Guest111]

The switchwire from landing light needs to go into common with the other 2 into l1 and l2 respectively.

 

[dave274]

and the switches need earthing.

 

[Donkey_Dave]

Red and Black/Blue yellow strappers, feed one end, switch line the other,shared neutral? earth?

 

[telectrix]

and why the blue sleeving?

 

[Knobhead]

and why the blue sleeving?

I don't like the wallpaper either.

 

[Darkwood]

and why the blue sleeving?

Come on Tel! ... blue used to be a phase colour (Live) its been used to identify strappers and switch wires although not sure what it achieved except to mark up black as a Live/sw... think you need a slurp of coffee mate

 

[telectrix]

never seen blue on strappers. either red or left as they were in r.y.b.

 

[Darkwood]

Yes agree tbh me neither but it was a phase colour so legit in the days ...sorry in our days

 

[telectrix]

Yeah. I can't see the point of labelling yellow/blue with red, however, now we have these stupid new colours, black could be confused for neutral so brown sleeving or brown trousers. Take your pick.

 

[midgetman]

OK thanks I will see if that works. I was thinking along same line as donkey dave.