Am attempting to wire a bath room fan with a light and night light to a 3 swtch control . If I use 12-3romex I still need an extra wire from fan to switch ? Or light to switch ?  unit is a nutone model qtn80l switch is leviton no. 1755 help! Also it appears I need to use the white wire from switch to blue wire on light or black wire to fan?

See your other post.