Hi im having a few problems working out the best way to wire my 240v recessed lights, I have put 5 in my bathroom in various safe zones, i would also like to know if it safe to place a dimmer switch on the outside of the bathroom door? and also the best way to wire the switch in from my existing pull chord switch, i have 4 wire`s coming out of the ceiling 2 black 2 red, its a stud wall so there`s no problem running a cable outside of the bathroom i just want to know if it`s (1)safe to do so (2) and the best way to do it, thanks very much. 
