Headlight Issue (turning off)
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4wd Low
Joined: Dec 2019
Posts: 11
Likes: 5
Headlight Issue (turning off)
When driving, and as dark approaches, my headlights and gauges lights will turn on appropriately.
Randomly (and more frequently), my headlamps will go off, yet the dash gauges are still lit up and so are the running lights.
This makes me think its not the ambient light sensor.
I'm kinda stumped for ideas, until the other day I wondered if a relay could exhibit this problem. Any other thoughts??
Edit to add
My switch is in the auto position, if I turn it off all interior and exterior lights turn off and when I turn it back on only the interior dash lights come on. Also there is no action between low beam and high beam, the headlamps just don't turn on. At some random point thereafter the headlamps will eventually turn back on and work normal.
2002 F250 with 7.3
424,000 miles
single owner
still basically stock
Randomly (and more frequently), my headlamps will go off, yet the dash gauges are still lit up and so are the running lights.
This makes me think its not the ambient light sensor.
I'm kinda stumped for ideas, until the other day I wondered if a relay could exhibit this problem. Any other thoughts??
Edit to add
My switch is in the auto position, if I turn it off all interior and exterior lights turn off and when I turn it back on only the interior dash lights come on. Also there is no action between low beam and high beam, the headlamps just don't turn on. At some random point thereafter the headlamps will eventually turn back on and work normal.
2002 F250 with 7.3
424,000 miles
single owner
still basically stock
Last edited by bicyclpete; Sep 22, 2025 at 05:49 AM.
Lead Driver
Joined: Aug 2022
Posts: 5,031
Likes: 1,406
From: Oologah, OK
on our Ford 2010 F-150 Raptor, the gauge lights and cab light and exterior marker lights stay on for 5 minutes after we get out of the truck.
Have not paid any attention to if the **** is on automatic or ON, OFF.
Have not paid any attention to if the **** is on automatic or ON, OFF.
Thread Starter
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4wd Low
Joined: Dec 2019
Posts: 11
Likes: 5
What is the best way to track down that circuit? Are those connections/wires under the dash or along the whole engine compartment?
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