I want to install a new dual spotlight fitting in my bathroom but am a bit confused about wiring . At present i have a rose fitting with the following wiring set-up, 2 grey cables coming out of ceiling , each grey cable has 1 blue, 1 red, 1 earth, and 1 yellow wire. ceiling rose connection are, 2 reds are the loop, 2 blues are the neutral, the 2 yellow wires are connected into the same terminal block next to the live wire coming from the pendant light, the neutral wire from the pendant light is in next to the other neutrals, none of the wires has a sleeve on it to indicate which is the switched live. the new light i want to put up has as follows: a terminal block with 4 connections. the 2 blue neutrals are in one, the 2 brown live are in another and the earth is in another one, which leaves 1 empty connention, so how do i wire up to new light fitting, can i also add that the pull cord light switch also operates the extractor fan which has a delayed timer.