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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Headlight issues

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Old Feb 10, 2008 | 02:10 PM
  #1  
71FordCustom's Avatar
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Exclamation Headlight issues

i have a 71 ford custom ive been working on for a few years now, and have had a problem with my headlights since day one. They work great for about 15minutes then start flickering on and off, i turn them off for 5minutes then turn them back on they work fine for another amount of time. i have went threw numerous switches and just installed a heavy duty headlight harness gotten from lmc truck book. with all of this i still have found no luck. If any one knows the answer please HELP!!!!
 
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Old Feb 10, 2008 | 03:21 PM
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Freightrain
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Have you replaced the dimmer switch on the floor? These will fail and cause the same kind of reaction.


Welcome to FTE!
 
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Old Feb 10, 2008 | 08:41 PM
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ya i have replaced that once awhile back i may def. try that one again thanks much!
 
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Old Feb 10, 2008 | 09:09 PM
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my72ford
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yep,i would have to agree with freightrain..the dimmer switch on the floor will cause that problem. i had the same issue a few years ago. replaced it and worked fine
 
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Old Feb 10, 2008 | 09:09 PM
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the head light switch itself need to be changed it has a bilt in breaker that gets week. pull the lights on and reach behind the dash and feel the back of the switch itll get hot and cut out the lights
 
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Old Feb 10, 2008 | 09:20 PM
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ya i have tried the switch thing bout 3 times and doesnt seem to work i guess it could be possible to have that bad of luck and get bad ones i dont know. and for hte floor dimmer ive replaced it once before maybe should try again. thanks for the help. just join on here today how do you get a pic next to ur name?
 
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Old Feb 10, 2008 | 09:35 PM
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Project_Roxanne72
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From: I live in Metter, GA.
On the front of the truck check your ground on the headlight harness. Bad ground bad lights. Cant think of anything else besides the previous answers.
 
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