Can I Wire A Bathroom Fan To The Light Switch. I have 5 wires sticking out of the metal switch box. The info I should give you is the light switch is located outside the bathroom beside the door entering and I will swap it out for a 2 function light switch combination 1 for florescent light in fan and light above sink at the same time and the other button for only the nightlight in the fan.
It solves other problems so its not a bad idea even if you have two switches. Exhaust fan wiring to two switches adding bathroom fan switch bathroom vent to existing lighting. Can you wire a fan and light on the same switch.
If you want to do a separate switch for light and fan you are going to need another wire running to the fan.
12-3 will actually work for either. As long as the switch and wiring are rated for the amount of current which unless you get a huge fan it should be. You can use pliers to twist them together properly. Some fans have an add on module to split a single power at the fan.
