The existing ceiling light has 2 wires 1 is black 1 is white. There are 4 wires coming out of the ceiling. {2 white & 2 black} 2 white wires from the ceiling are connected --- the BLACK wire from the light is connected to the black wire from the ceiling. The WHITE wire from the light connects to the other black wire from the ceiling. HOW do I connect a ceiling fan/with light so that the light is controlled by the ONLY wall switch and the fan operates independentaly { hot all the time} controlled by the pull chain??