Everything you mentioned runs thru the turnsignal switch I would start there. There are also fuses under the hood of your F-series mounted on top of the driver side fender in a little black box. I believe the box reads power distribution box. You may some blown fuses in there as well
Could be the bulbs or the fuses or the flashers or the signal switch assembly
hazards and turn signals have separate flashers. replace flasher for turn signals
Probably a wiring issue between the turn signal and the lights.
try replacing the flasher. there should be two, one for flashers and one for turn signals
Probably the turn signal flasher
this car may have separate flashers for the turn signals and the emergency flashers
Hazard and turn signals usually use separate flashers, switch the flashers to see if turn signals work and hazards don't, if so replace the flasher you need to replace the blinker flasher unit it is different from the hazard unit they cost about 4 bucks the flasher unit is the big round thing in the fuse panel in the dashboard
in dash lights
Try pushing the hazard light switch on steering column repeatedly. I had a strange problem with my hazards once and this fixed it for now. I think my problem was the signals not working though....
Your problem is most likely the turn signal relay im having a problem similar to yours but when my signals wont work neither do my hazards
On the 1979 B200 Sportsman V8 if the brake pedal makes all signal lights come on and hazards and flashers do not work on their own, it could be the flasher, but the culprit could also be a burned out bulb or a short in the wiring.
If neither signal light works, the flasher may very likely be the problem. The hazard lights and the signal lights work off different flashers.