I just purchased a 2002 f150 yesterday. As I was driving home my wife let me know that when I would turn left my rear right signal would flash. Left side does nothing even when right switch is on. Also brake light on left does not work. Running lights run fine and reverse lights are working. Both front indicators work correctly. What did they do, where would the problem be, and how do l fix it. Also the bell that let's you know the key is in only rings when key is out.