2 way lighting pendant

[steq184]

I am trying to wire in a 2 way lighting pendant.
What I have is 4 cables coming out of the ceiling.
2 cables are red, black and yellow and 2 cables are blue, red and yellow.
My new pendant is blue and brown terminals.
So far I have wired all red together in the pendant and all yellow to earths in pendant but what to do with the 2 blue and 2 black.
No sleaving is on any cable!!!
What now?

 

[riveralt]

I am trying to wire in a 2 way lighting pendant.
What I have is 4 cables coming out of the ceiling.
2 cables are red, black and yellow and 2 cables are blue, red and yellow.
My new pendant is blue and brown terminals.
So far I have wired all red together in the pendant and all yellow to earths in pendant but what to do with the 2 blue and 2 black.
No sleaving is on any cable!!!
What now?

Two way lighting circuits are normally wired through the switches as per wiki.

//www.diynot.com/wiki/electrics:lighting:two_way_lighting

The blue, red and yellow cables are the old three core colour - not sure about the red, black and yellow (unless you mean yellow/green cpc).

Photographs of the ceiling rose wiring and inside the two switches would be helpful. Make sure the power is of before removing the switches etc.

 

[sparkwright]

What I have is 4 cables coming out of the ceiling.
2 cables are red, black and yellow and 2 cables are blue, red and yellow.

Are you certain you've got that right?

Unusual for a cable to have red, black, yellow. Is the yellow a bare earth with green and yellow sleeving?

Does the cables with red, yellow and blue have a separate earth wire, possibly cut off?

Pictures would be welcome.

 

[steq184]

Sorry yes yellow is earth. No wires cut off as far as I can see.

 

[sparkwright]

Sorry yes yellow is earth. No wires cut off as far as I can see.

Is 'yellow' the earth on just the red/black cables?

Has yelow been used as earth on the 'red, yellow blue' cable, or is there a separate earth wire on these cables?

Do the switches control just this one light?

What colour wire goes to the 'common' terminal at the switches?

 

[ban-all-sheds]

And how/where were they all connected in the original ceiling rose?

 

[Taylortwocities]

What room is this in?
Are there otherlights in the room from the same switch
Is there an extractor fan?

What do you exactly mean by "two way lighting pendant".