Wiring extractor (bathroom) through light

[camerashyman]

Just changing pendant in bathroom and forgot ( ! ) where the connections for the extractor go.

I have 4 cables in light fitting.

1. From source (L N E)
2. To next light fitting ((L N E)
3. To switch (L N E)
4. To extractor - Red, Blue, Yellow & Earth

I know how to connect 1 2 & 3 above, but can't remember where the 4 colour cables to extractor go.

Any help please?

 

[mapj1]

At a first guess - but best to look at the other end of the wire if you can,
Blue neutral.
Red live all the time
yellow live when light on to trigger fan to start timer.

Possibly reverse roles of red and yellow if it doesn't go off...
That is how I do it -BUT there is NO 'universal' agreement on colours between different installers though -
as an example of colur re-use the 'black' to your light switch is not neutral - it is the switched live coming back to power the light fitting, and you have to know that re-use of the neutral colour from the context.
(and people who don't put the switch accross the supply and watch it blow the fuse when operated - about 1 poster a week on this BB, not bad for the hundreds who read it)

There is a typical fan installtions drawing in the reference section.

 

[camerashyman]

I am not black and crispy and hanging from the ceiling.

So thanks to all the speedy help.

Its sorted