Today I thought I would put a light in my loft, however, this job turned out to be harder than I thought. Afer fitting light fittings and pull switch I ran the live feed down to what I thought was the main power wire for upstairs lights. After cutting this wire expecting to find the 'normal' brown, blue and earth, I found it was a four core cable with black, brown, grey and earth, my problem is how do I connect my loft lights into the junction box I now have. Please help!
