what would cause no headlights or high beams have running lights and i can flash the highbeams


Asked by mgl540 Oct 02, 2013 at 09:13 PM about the 2000 Ford F-350 Super Duty Lariat 4WD Crew Cab LB

Question type: Maintenance & Repair

i have a 2000 f350 i turn on the headlights they wont come on the high beams wont come on either  i can flash the hi beams by pulling back on the dimmer swtch i have marker lights what the heck is goin on anybody run across this before.??????

6 Answers


Check your fuses first. Dose you truck have daytime running lights(DRL)?

3 out of 3 people think this is helpful.

fuses all check out an it does not have drl or auto headlight switch iam leaning towards the dimmer but not sure i dont want to throw parts at it


Power for low and high beams goes through the headlight and dimmer switch. Flash-to-pass, goes around the headlight switch, straight to the dimmer. It still can be either part. With the headlight switch in the "on" position, check for power at the Red w/yellow stripe wire at the headlight switch. If you have power there, it's a bad dimmer switch. If there is no power, then it's the headlight switch.

2 out of 2 people think this is helpful.

thank you i will give it a shot

1 out of 1 people think this is helpful.

Hey, I have the same problem. I've replaced the dimmer switch and the head light switch. I have new bulbs, I've done the pigtail to the headlights but still doesn't work. I've checked all of my fusses as well. Can anyone help? Thank you!

1 out of 1 people think this is helpful.
Brandon McCubbin

Hey jcks did you find a solution to your problem. I need help as well

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