Need to install 1 light in a downstairs hall, and 3 light on the upstairs landing. Downstairs and the end of the landing will have a 2-way switch which is fine, but at the top of the stairs there will be a 4 gang 2 way switch. Can I replace the terminals from one of the 4 gang 2 way switches and replace it with the terminals of an intermediate switch? Therefore the lights upstairs can be turned on/off from downstairs, at the top of the stairs, and the end of the landing.
Cheers
Cheers