3 Way Light Switch turning one light on and another off from same switch.

[OwainOW]

Hi All,

I installed a new 3 way switch and intially had it working on all 3 switches after just doing a switch by switch cross over of the cables. I then snapped a screw in the backing box which meant draggging all the wires out. Although I tried to group them I have been unable to rewire correctly as now one switch (middle) does nothing and the right switch turns one hallway light off and another on and vice versa. The left most switch is just an single on off and works fine. It seems from my limited knowledge I mayhave miss wired the traveller cable but I can’t figure it out. Any help would be greatly appreciated.

[GALLERY=media, 107743]F4C628A2-856C-470E-9629-B652DA11B917 by OwainOW posted 2 Mar 2022 at 11:46 AM[/GALLERY][GALLERY=media, 107742]589165AA-BDA8-4F75-939D-1A5D28517714 by OwainOW posted 2 Mar 2022 at 11:46 AM[/GALLERY][GALLERY=media, 107741]5CFDFF84-5B06-400E-B38E-6C89D4B64582 by OwainOW posted 2 Mar 2022 at 11:46 AM[/GALLERY][GALLERY=media, 107740]D20AC9B0-575C-4AC5-88F7-B5AFE4F5D824 by OwainOW posted 2 Mar 2022 at 11:46 AM[/GALLERY]

 

[opps]

Don't you mean 3 gang rather than 3 way?

I am not an electrician, but when face with similar problems I have turned the power off and used a multi-meter to test continuity between each ceiling rose and the switch (to determine which wire is which). I then refer to the web for images showing me how 2 way, or 3 way lighting works.

I don't have super long leads for my multi-meter so I use lengths of telephone cable to extend the connections between the multi-meter and ceiling rose.

 

[markyd1]

That faceplate need an earth terminated to the lug