My question is about wiring it. It will be fitted almost where a Shaver Transformer is currently.
I would like to remove the existing transformer and use the wiring (off lighting circuit) to power the mirror.
The transformer has 3 lives and 3 neutrals looped into the back box.
I would like to end up with the backbox covered over and the flex from the mirror terminated under that cover.
Any suggrestions for doing it correctly?
An alternative may be to pull the 3 cables up into the loft, join them in a junction box and take a single cable down to the back box. However the cables are in an area of very restricted working space.