I have a question here. I pulled out an old exhaust fan/heat lamp combo unit from the bathroom ceiling. I want to install a fan/light combo. All the ducting work is easy enough, but the old unit was 220 and the new is 110. I know the red and black are both hot, white is neutral, ground is ground, etc. Can I use the black to run the light and the red to run the fan, and pigtail the white to cover both? Running new wiring is not an option, unless I want to trench the walls, and I don't want to. So my basic question is, can a 220 be split into two 110 lines?