Adding a single switched light into a 2 way switch

18 Oct 2009
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United Kingdom
I have 3, 2 way switched lights in my garage and want to add another light but to be 1 way switched. I have run a 2 core and earth cable from the new light into one of the switch boxes and have changed the single switch for a double 2 way switch and re-connected the main lights back as they were in the original single switch. My question is how do I wire in the 2 core and earth from my added light into the other one of the switches or do I need to run in 3 core and earth instead?
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do you have a neutral at the switch?

if you do it will most probably be in a separate block.
Just got a yellow and blue wire, both sleaved red in the L1 and L2 terminals and a red wire in the common terminal.
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then you don't have a neutral.. you need to get a supply to the light ( ie live and neutral ) then you can use the already run 2 core as the switch wire, or you need to get a neutral and live at the switch..

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