I am driving my Dad's 1999 F150, Everything works - brake lights, hazards, front and rear lights, dash lights, but all four turn signals. I have replaced the fuses (13, 20) and the high amp fuses under the hood (cannot remember the numbers there), bulbs work - but checked for good connecttion. The parts store and Ford garage say the flahser. Any ideas where the flasher is? I know what it looks like but dang if I can find it. Searched the web and cannot find a replacement for it, so I am wondering if there is a flasher in the newer models?
thanks
Diana

 

Its a yellow relay in the relay box with the blower relay, under the drivers side dash, towards the center of the dash. It is a relay and flash unit built into one.

 

if your hazard lights flash. it's not your flasher your haveing trouble with. turn sig use same flasher. good chance you have a diff. problem. like multifunction sw. good luck

 

it's fuse 13 and 23. but if the hazards work. those fuse's are good. sounds like sw. good luck

 

it's fuse 13 and 23. good luck