Two way lighting not working

[peter m]

Hi guys I have changed my two way light switches for new ones and wired the same way, had to extend the wiring as to short as had to move the switches abit to put new box in the walls,have connected up as before but neither are working, I fint have a electrical tester either ,swapped wires around from original switches and got one working downstairs, then one worked upstairs but not together, so just wired up as originally done,I took pics so I know it is correct ‍‍

 

[peter m]

These are the original switches

 

[mikehammer69]

One of the switches is wired as 1-way not 2-way ?

 

[CountryFan]

Maybe go and buy a cheap tester? Or employ an electrician? Unless you can confirm correct voltages, I doubt wiring advice would be beneficial.

 

[pcaouolte]

I know it is correct

As it isn't working, it can't be correct.

Can you post the photos you took before you changed anything.

 

[peter m]

One of the switches is wired as 1-way not 2-way ?

The pics of the wiring on the original switches, i had no issues all working fine could turn lights on and off from either switch ,i post the new switches,i had to extend the wiring as I moved the switches over,maybe the connectors are not 100 %,I will buy a tester i guess and check gor power either side of connector

 

[peter m]

As it isn't working, it can't be correct.

Can you post the photos you took before you changed anything.

They are the originals before I changed anything to new switches

 

[peter m]

Maybe go and buy a cheap tester? Or employ an electrician? Unless you can confirm correct voltages, I doubt wiring advice would be beneficial.

 

[peter m]

I've used joiners they seem connected OK but nothing works

 

[peter m]

Maybe go and buy a cheap tester? Or employ an electrician? Unless you can confirm correct voltages, I doubt wiring advice would be beneficial.

I have changed loads of switches and sockets never had an issue before

 

[ericmark]

Wired as two-way, note the red wire is in com. With this one the black and blue have come out to the terminal.

 

[peter m]

View attachment 418384 Wired as two-way, note the red wire is in com. View attachment 418387 With this one the black and blue have come out to the terminal.

Those other wires are not in use they were already taped up ,the pics I posted are how it was wired and working fine

 

[ericmark]

Not possible, they likely pulled out when you removed switch

there must be three connections for two way switching to work.

Sorry the picture not as intended, the at moment empty terminal will have the unused wire either red or black from two core, and the blue from three core.

 

[terryplumb]

In your picture above ,post no.8,( with the 2 red and 1 yellow wires connecting to a new switch) check the wire going to the com terminal.

 

[ericmark]

This is how two-way works. you're red shown grey here from com to com must be correct, you have red and black which must go to S1 and S2 and blue and yellow also must go to S1 and S2 swapping red and black does not matter, or blue and yellow does not matter.