Hello, hoping someone can help me with a question. I recently purchased an old home for a rental. There is no overhead lighting in the living room as they used to use lamps for lighting in older homes. I have one switch with a black and white wire running to it which turns on a single outlet with flipped to ON. I wired the black and white together to keep the outlet on all the time. My question is can I use the existing two wires to power a celing fan? I'd like to jumper off that two wire connection to provide 120v to a switch and power the fan. I have 120v before I make the connection and then 0 volts after I tie them together..it seems weird. Im pretty sure I can pig tail but I'm probably confusing myself and measuring wrong..any help would be great. Thanks!