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Headlights randomly turn on off and on

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Old 09-12-2017, 03:00 PM   #1
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Default Headlights randomly turn on off and on

My headlights have started turning off and on randomly. At first it was only when the brights were on but last time I drove the dims started doing it too. dash and taill lights stay on and turn signals still work. any suggestions on were to start looking?

1990 f150 5.0 5spd 4wd

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Old 09-12-2017, 03:11 PM   #2
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Year? Engine? Model?
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Old 09-12-2017, 03:17 PM   #3
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1990 f150 5.0 5spd
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Old 09-12-2017, 03:21 PM   #4
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added info to post.
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Old 09-12-2017, 03:51 PM   #5
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Having all the info may help you get the answer you need. Sorry that I cant provide you with the answer though.
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Old 09-13-2017, 10:31 AM   #6
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Probably a bad headlight switch
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Old 09-13-2017, 02:17 PM   #7
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I've seen that frequently, so far it has always been the dimmer switch.
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Old 09-18-2017, 04:35 PM   #8
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Found the problem, the connector to the headlight switch was burnt. I replaced connector, switch and dimmer switch. seems to be working now.
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