headlight problems
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New User
Joined: Oct 2004
Posts: 22
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headlight problems
I Have A 1978 Ford F-150 4x4
I'm Having Problems With The Headlights .they Will Just Flash On And Off .its Just The Headlights Nothing Else I Does Not Seem To Matter If They Are On Hi Or Low Beems .they Will Still Flash Off And Come Right Back On .it Doesn't Matter If You Are Driving Or If The Truck Is Just Sitting With The Lights On .only Thing I Have Noticed Is They Seem To Dim A Little First Before Going Out. I Have Checked The Grounds On The Lights .everything Seems To Be Ok .can Anybody Help Me Out With This Problem .getting Afraid To Drive The Truck Anywhere For Fear They Will Go Out And Not Come Back On .thanks For Any Help You Can Give Me
I'm Having Problems With The Headlights .they Will Just Flash On And Off .its Just The Headlights Nothing Else I Does Not Seem To Matter If They Are On Hi Or Low Beems .they Will Still Flash Off And Come Right Back On .it Doesn't Matter If You Are Driving Or If The Truck Is Just Sitting With The Lights On .only Thing I Have Noticed Is They Seem To Dim A Little First Before Going Out. I Have Checked The Grounds On The Lights .everything Seems To Be Ok .can Anybody Help Me Out With This Problem .getting Afraid To Drive The Truck Anywhere For Fear They Will Go Out And Not Come Back On .thanks For Any Help You Can Give Me
Junior User
Joined: Jan 2005
Posts: 79
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headlite problems
you have same problem as many older vehicles. i have 2 1974 ford trucks with same problem. i changed headlite switches and dimmer switches and still had same thing happen. i even did a part warranty on switches. i found an article in hot rod mag about high resistance through wiring and switch and contacted magelectrical.com about installing relays so high voltage does not go through dash. lites are supposed to be brighter too. i installed relays on one truck. no more flashing lites. they may not be brighter, but now i can install silver star blue headlites(they require more voltage i guess)
New User
Joined: Jan 2008
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Likes: 24
Why not re-wire you truck like GM does ?
With Relays....see the tech article *Whiter White & Brighter Brights*
https://www.ford-trucks.com/article/...r_Brights.html
With Relays....see the tech article *Whiter White & Brighter Brights*
https://www.ford-trucks.com/article/...r_Brights.html
