Hi, can anyone tell me what the 4th wire is in this light fitting? & if so how I wire it in? I've done several lights in my new home successfully but this is the only one with a 4th wire? https://s.amsu.ng/5jDxjxh97VtN
I thank you for your reply and help but I had a brain wave and looked back on backed up pictures for when I took the light down and it turns out it was the earth, 1 went to the metal of the light itself whilst another went through the light fitting itself.
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