I have a bathroom fan, heater, light combo - the switch I got has three toggle rockers on it . There's one black common screw and three silver screws on the switch. Does the black power go to the common or does the single pigtailed white go to the common and the blacks to the silver screws?
Should clarify that I have three wires from the new combo unit... one for the light &a night light, one for the heater and one for the fan