I am currently changing all the light switches in my house (to fancy brass ones!!!!).
All was going well till I got to the landing switches.
Before I changed it the light could be turned on and off from up or down stairs, but since I have put in a new switch (up and down), the light is permanently on!!!, regardless of switch position.
The cable downstairs consists of 3 wires, yellow, blue and red and the light switch has L1, L2 and common.
The cable and switch upstairs are the same, although there is another cable with only one red wire coming out.
Currently I have the blue in L1 and yellow in L2, and red in common. The spare red is also in the common of the bathroom switch (upstairs)
Hope this makes sense, and I presume Iâ€™m going wrong somewhereâ€¦.. any help appreciated.