UK HELP - Downlights staying on after replacing one with Switched live

[librasean]

As title - had one downlight that transformer had gone so took out light,fixing,transformer and replaced.
Had 3 wires coming in.
1x Red,Blue,Yellow and Green
1x Red, Black, Yellow and Green
1x Red, Black with Red coating added on end, Yellow and Green


Wired up with Switched live (black wire with red sheathing added) to live of new light.

Other 2x neutrals to neutral of new light.

Other 3x lives together into connector box of new light.


When I turned it back on - other downlights in the room stay on constantly and new downlight turns on/off with the switch.

 

[telectrix]

so you have fed the other lights with a permanent L instead of a switched L. the one you have worked on must be the first in the chain. determine (by elimination) which red? feeds the other lights and move it to the sw.L same as in the 1st light.

 

[Marcus Vaughan]

It’s the three reds together that’s your problem I think. Likely that one of those cableS coming out of the light you have replaced is feeding the other downlighters - so one of those three reds should also be with your switched live.

 

[librasean]

That makes perfect sense - had a moment of mind blank/ panic when it didn't work. Thanks!