FUSES FOR HEADLIGHT DIM AND BRIGHT

SOURCE: dim headlights

did you check your fuese under the hood al so check were your light plug in you may have a broken wire

SOURCE: 2004 F150 headlights will not work the running

Have you checked your fuses and relays? There's a few and not just one to check. The daytime running lights are on another relay than the headlamps.

SOURCE: dash and radio lights dim then get bright and then

wht ??

SOURCE: I have a 2008 f250.

I am sure that a 12 Volt bulb means it needs 12 Volts. Since you changed the bulb to the other side, why not check the voltage in the working side and see what it reads?

Sometimes the turnstalk can interfere with the lighting. Try pushing the Hazard switch several times and see if the headlights straighten out. I read that too much goes through the turnstalk and that using the Hazards can derail a contact inside the stalk.

If this does not help, you may need a headlight relay in the powerbox. One contact may be dirty or burned down for the wire it feeds. Unless you have a single wire feeding both low beams to the headlights, I would bet the left and right side come out directly through the relay.

SOURCE: Both headlights stopped working in the dim position, but they work in the

both headlights might have dim blown out buy a new bulb and see