installing wall lights on new conservatory

[mjr001]

there is a new lighting circuit on the new single storey extension, but now there is also a new conservatory going in next to it, how is the wiring done to put in 2 wall lights on the old exterior wall, i know how to wire up to ceiling roses, but how do you do it to wire up to wall lights, can the old lighting circuit be broken into with a junction box (or are these outlawed since 17th edition). obviously you cant have incoming, next light, switch wire and wall light going into the wall light. hows it done please

 

[Chri5]

In the switch back box so all in, out and switch cabling can be accessed.

Look at lights in the DIYnot wiki.

 

[sparkwright]

you need to find a point on the existing lighting circuit containing permanant live, neutral and earth. possibly you have an outside light switch nearby.
the easiest way to do wall lights is to run a t+e from supply to new switch; and then a t+e from switch to wall light. at the switch the neutrals would go together in a separate connector block; the lives either side of the switch.

an easier way to obtain a lighting feed may be to include an unswitched fused spur unit on the socket circuit. fuse to 3 or 5A and run 1.0 mm t+e from this to new light switch, from here to wall light.