Want to fit new wall lights to wall where some have been previously.
I have 2 places where there are wires coming out of the wall, both of these areas have 1 red, 1 black and one uncovered copper wire.
However, one of the areas also has some other wires close by - they are
1 black and 1 red twisted together
Do this second set of wires need to be incorporated into this to enable me to turn ights off at switch - if so how do i do it. The light fittings have a 4 block terminal with a blue, brown and green and yellow wire fitted.
What do I do?