Moving into a house built in 1950, with a switched vanity light and no outlets in the master bath (previous owners had the oh-so-classy outlet-in-a-light-socket doohickey behind one of the vanity globes).
I'd like to put in an exhaust fan/heat lamp combo in the ceiling and a GFCI outlet at the switch plate. I'm picturing a 4-gang box with a lightswitch, 2 timers (heat lamp and fan), and the outlet.
My question concerns the wiring, and what is appropriate/safe/legal. I'm planning to run 12-3 straight up the wall from the box to the attic so the red and black control 2 streams of switched power to the light and fan with a common neutral (per the mfr. wiring diagram).
Does the neutral going to the existing vanity light need to be in series with the new neutral at the fixture, or can the existing and new neutrals be hooked together in the wall box at the pigtail connection?