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- 17 Oct 2010
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doing it that way will be more of a PITA because of the distance between the 2 lights and the fact that the wire will need to be run through several joists and would need either a huge piece of plasterboard removing or several smaller ones.
I have spoken to the sparky who installed the electrics and he thinks he can call round tomorrow (he needs to repair a dimmer switch that is broken anyway) so hopefully he can just sort it, the cables are run for him which is the fiddliest bit I guess.
For normal wiring you would have 2 (maybe 3) wires going to the old light
1 - feed / loop which is perm live and neutral (x2 if this is not the last light in the circuit)
2- switch, takes perm live to switch and switch live brings power back from switch to turn light on
if yours is wired this way, the most common way, then cutting into 1 cable you find in the ceiling will not work, from your description sounds like you have cut into a loop cable, perm live and neutral.
The only way cutting into 1 cable would work would be if your lights are wired "loop in at the switch" rather than at the light, this would mean that you have a neutral and switch live going from the switch to the light, and so cutting into this would work
you can tell if you have loop at the switch because you would have neutrals in a choc block behind the switch