DIY Doctor

Replacing Ceiling Light but Forgotten What Wire Goes Where

Postby henryshep » Sat Dec 05, 2020 7:13 pm

I am replacing a ceiling light, but never took a picture of the wiring before the original was taken down.

They are the old colour scheme.

I have two red wires (live), one yellow/green (ground) and two black (neutral) coming from the 'main' circuit', and two red wires, one yellow/green, one black, and one black with a brown sleeve (switch).

I have wired the grounds together and into the light, and the neutrals together and into the light, and I have the black with brown sleeve wire also going into the light.

I am not sure what to do with the four red wires. From what I've seen online they only show three red wires. I have tried some combinations I thought worked, but it either didn't turn on, or the switch wouldn't work.

It would be great if someone could point me in the right direction. Thank you.
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Postby Mr White » Sun Dec 06, 2020 12:08 am

If you are saying you have 4 cables, each cable has Red, Black and earth, and one black has brown sleeving, connect all 3 plain blacks together, connect all earths together, connect all 4 reds together.

Connect the actual lamp to the single black with brown sleeve and the 3 all blacks.
The 4 reds stay as they are, just 4 reds.
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Postby henryshep » Sun Dec 06, 2020 11:58 am

Thanks.
I've tried putting all four in, however the neighbouring light was connected to the switch.
From looking into, it seems I need to put the black and brown sleeve with a red wire into the live, and connect the other three red lives together.
Does that make any sense?
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Postby Mr White » Sun Dec 06, 2020 9:00 pm

You appear to have not done as I said.

I never said "Put all 4 reds in" I did say "connect all 4 reds together"
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