I have a 3-way setup with one switch at the top of the stairs and one at the bottom for a light at the top of the stairs. It all appears to be wired fine and I have power and light but the switches are not working to turn the light off. Please can someone give me an idea where to check as I have triple checked all the wires now?!
The top switch has been wired with a black marked live wire which I have then wired into the light fitting with the other live wires.
I am not sure if this is to do with the switches, fitting or something more advanced?