turn signals

I have a 1988 Ford Bronco 5.0L, problem is the turn signals.When I put the blinker on right or left the arrow and the light both stay on don't blink. I Check the relay, the fuses, and no burt blubs. So i am kinda stump on this problem right now. So in order to turn you have to make the blink manually. Thank you :banghead:

check and see if your flashers are on or. i have an 84 and the flashers were on but not flashing. turned them off and now i have blinking turn signals