I have 2 switches to control the light and fan individually. All of the instructions I see on line are to connect white to white, black to black/blue and green to green. My problem is that I have green, black, white and brown wires coming out of the ceiling. I have connected the greens/ground. Connected the whites and the blacks. The fan and light will not work individually. There is that 1 brown wire coming out of the ceiling that I don't know what to do with. None of the instructions online mention the brown wire. I've heard mention of a red wire, but don't ave that. Any instructions will be greatly appreciated. Thanks.