If just one headlight quit working it probably burned out.
If both headlights quit working at the same time the fuse probably blew.
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.
probably the fuse is blown.
It is possible that both of the fuses are bad for the low beam headlights and the cruise control. A loose ground wire could cause the fuses to blow.
i know this will sound silly but first make sure the headlights themselves are not blown.you would be surprised how many Kia's come into my shop with headlights not working and all the headlights are blown. after that get a volt meter and disconnect the light and test to see if you have power , remember the dimmer switches are famous for cold solder joints and will also cause this problem.
Bad ground on the brake lite circuit.
Alternator
Not usually. Disconnect it and see what happens.
It is probably the running lights that are working and the regular headlights aren't working because of the switch or wiring. TAke it to a garage.
Possible ground issue at the taillights.
It could be your window regulator.
Check the fuses.
I would replace the headlight switch as Ford has had their share of these problems.