The headlights in the Ford F150 may have stopped working due to a bad fuse or bulb. Check these and if it doesn't fix the problem visit a mechanic.
your alternator is going bad
If you have no battery then you have no power.
vacuum leaks
emergency blinker
most likely would be a bad turn signal flasher
I had a 97 F150 with the same problem. Per internet advice I removed master light switch from steering column and cleaned the green corrosion. This gave me my highbeams back. Later when I had $100 for a new switch, I replaced it and the headlights have been working fine ever since.
no you shove it up buttocks no you shove it up buttocks
A bad ground wire is the most common cause of turn signals and brake lights not working. The ground wire connection might be corroded.
This Had happened to me... Try changing the dimmer switch... It cured my problem.
The head gasket is about to blow.....Typical ford..
Probable it is the fuel pump in the front tank. When you change it at the switch listen to see if you can hear the pump working, if not got to remove tank or bed and replace pump.
Probably the sending unit.