My living room has one wall switch that feeds two different lights/ sconces . The switch has only two black wires on the side of the switch. one on the top and one to the bottom .
I would like to install a dual switch where one of the black wires, instead of feeding a wall sconce, feeds a ceiling fan, and use the other black wire to continue to feed the other wall sconce . The sconce that I want to rewire to feed the ceiling fan has only a white wire and a black wire powering that light. However, there is no white wire coming off the switch, there are only two black wires.
Must I make adjustments to other wires that are in the box behind the switch ?
It looks like a mess in that box behind the switch , with white wires joined and two black wires joined to white and black wires .
Pictures upon request . Thank you in advance .