lighting help

[Greene King]

Low voltage lights in our bathroom ceiling have been removed. (I did not take out but still have the 5 transformers and fittings, which are shot) I would like to replace the lighting with similar but am unsure about the best way to tackle it.
There are five holes for the lights and each hole is serviced by what looks like 2.5mm t&e (??). ( I have tested the remaining cable and it is all live).
Not able to see into the roof space as I live in a flat.
I guess the person who installed the lights used a JB and supplied each light from that.
Thats all I can see.
How the hell do you know whats happening when its up in the ceiling.
what to do?

Any advice greatfully received
( I am a student on th 2330 and fancy having a go at this myself, but will get a spark in to check)

 

[Belle427]

probably 1.5 t and e,how many cables come through each hole

 

[Greene King]

One cable for each hole

 

[Belle427]

are you wanting to replace with downlighters again?

 

[Greene King]

Yeh, basically wanting to put downlighters back in.
Not sure if new downlighters need a transformer for each lamp, (as it used to be) I beleive you can run off one now. But finding the cable in the roof space looking through a small hole seems like a bit of a challenge

 

[RF Lighting]

Do the job properly.

One transformer per fitting

 

[securespark]

Make sure they are suitable for the zones they are in.