crazymikey
+1y
bad ground probably. Actually,just the other day my signals quit working on me like you described,I could flick it left or right and nothing would happen,just dead. I was like wtf? I hit my 4 ways and my 4 ways worked,so I turned em off and hit my signals again and they worked. It was kinda weird.
Follow all your wiring for the signals and check your grounds on the harnesses of the front markers and the tails. There are grounds on the frame that will probably be corroded.