Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Headlight Problem

Thread Tools
 
Search this Thread
 
Old Jun 9, 2012 | 10:09 AM
  #1  
Stangas's Avatar
Stangas
Thread Starter
|
New User
Joined: Jun 2012
Posts: 14
Likes: 0
Headlight Problem

Hello all

i have been searching this website for a few hours now and have not found a problem the same as what i am currently experiencing.

The headlights work fine but every now and then (lately every time i drive it at night) the headlights just turn off and then return after a few moments.. i loose the parking, headlights, high beam and also the spotlights.

A few scary moments driving to work at night i give you the big tip.

So... i am going to pull the switch out and investigate the female plug as many have mentioned previously in this forum, and investigate the headlight relay modification.

Is this heading in the right direction blaming the plug to the switch mechanism? can the plug be repaired if found to be the problem? where would i find a new one to replace the old?

Can someone direct me in finding the correct way of doing this relay wiring mod?

Cheers in advance
 
Reply
Old Jun 9, 2012 | 10:24 AM
  #2  
White 97 xlt's Avatar
White 97 xlt
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
First off, Welcome to FTE...

I would say you are heading in the right direction with your diagnosis.. The headlight switches are known for having the thermal breaker go sour (weak) just pop in a new switch, and check the plug as you mentioned if it looks like it has been hot grab one at the parts store when you get your switch.

The relay mod takes a lot of load off of the switch and results in brighter lights, so it is a good mod..
 
Reply
Old Jun 9, 2012 | 10:28 AM
  #3  
Volvo92906's Avatar
Volvo92906
Posting Guru
Joined: Jul 2009
Posts: 1,069
Likes: 1
From: Toledo, Ohio
I agree with White. Sounds like the headlight switch. While you are in there, check the plug and wiring for any sort of damage.
 
Reply
Old Jun 9, 2012 | 12:20 PM
  #4  
XLT89F350cc's Avatar
XLT89F350cc
Senior User
Joined: Apr 2012
Posts: 119
Likes: 0
From: sNJ
i cant find the link here, i know full size bronco has a write up with a schematic, for the mod
 
Reply
Old Jun 9, 2012 | 12:36 PM
  #5  
Stangas's Avatar
Stangas
Thread Starter
|
New User
Joined: Jun 2012
Posts: 14
Likes: 0
yeah i was just talking to one of our older gents at work here and mentioned some have a thermal breaker due to the resetting after about 30 secs...

First i have heard of this... but something new everyday.

I will rip it out this afternoon... it is a pretty dangerous situation to be in at night with lights tripping.

that wiring mod would be awesome... still cant find it
 
Reply
Old Jun 9, 2012 | 12:39 PM
  #6  
XLT89F350cc's Avatar
XLT89F350cc
Senior User
Joined: Apr 2012
Posts: 119
Likes: 0
From: sNJ
RJM Injection Tech — Headlight Harness
 
Reply
Old Jun 9, 2012 | 01:00 PM
  #7  
XLT89F350cc's Avatar
XLT89F350cc
Senior User
Joined: Apr 2012
Posts: 119
Likes: 0
From: sNJ
finally found it.....

Whiter Whites, Brighter Brights .: Articles

wire it up like this
 
Reply
Old Jun 9, 2012 | 01:10 PM
  #8  
Stangas's Avatar
Stangas
Thread Starter
|
New User
Joined: Jun 2012
Posts: 14
Likes: 0
Awesome... cheers mate

Well written, and i am able to do that with almost everything at home already.

Thanks guys

one last question...

is the 1986 the same switch as the 1989.. cant find an 89 one anywhere.. pretty sure it would be 87 - 91?
looks similar. where do you find em.. in australia it is a bit harder
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Jun 9, 2012 | 01:11 PM
  #9  
XLT89F350cc's Avatar
XLT89F350cc
Senior User
Joined: Apr 2012
Posts: 119
Likes: 0
From: sNJ
good luck with it
 
Reply
Old Jun 9, 2012 | 07:55 PM
  #10  
whiteboyslo's Avatar
whiteboyslo
Posting Guru
20 Year Member
Joined: Jan 2001
Posts: 1,101
Likes: 2
From: Poway, CA
FWIW, I used the relay kit from LMC truck and am quite happy with the results.

Mike
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dieselsubmariner
1994.5 - 1997 7.3L Power Stroke Diesel
5
Nov 23, 2012 09:08 PM
Stangas
Electrical Systems/Wiring
4
Jul 25, 2012 04:25 PM
kyle j
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
27
Aug 25, 2010 01:30 AM
94cummins12v
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
9
Mar 16, 2010 01:45 AM
Caleb1
Electrical Systems/Wiring
2
Nov 22, 2005 09:16 AM




All times are GMT -5. The time now is 11:08 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE