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Old Aug 29, 2003 | 04:26 PM
  #1  
sethro's Avatar
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No Headlights

I lost power to my headlights, but have power to all other exterior lights. Also, my interior light is constant on, until i remove the bulb...lol.

I want to do some intial testing, before i have to take it to the shop... Can someone with knowledge tell me what i should check? I did some checking and how no power to the wire leads comming out the back of both headlight. When i unplug the headlight adapter, i get power to the ground...

any help would be appriciated.

Mark
 
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Old Aug 29, 2003 | 11:02 PM
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No Headlights

First obviously check your fuses. Then pull out the headlamp switch and unplug it and check for burned wiring terminals. Then check for proper power and ground to the various circuits. Ive seen many burned pigtail connectors on headlamp switches and you should replace the pigtail connector if you find it in that condition as well as the switch.
 
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Old Aug 29, 2003 | 11:57 PM
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No Headlights

OOPS,I forgot to mention.... I replaced all fuses with new ones, just to be safe. I bought a new light switch as well.
 
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Old Aug 30, 2003 | 09:48 PM
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No Headlights

I am having a similar problem. The headlights do not work, but if I pull back on the signal, the high beams come on. I have done some research and it looks like there have been issues with the multifunction switch. I replaced all of the fuses on the panel...are there any others for the headlights that I should check?
 
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Old Aug 30, 2003 | 09:53 PM
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No Headlights

Sethro appears to have a 1978, so it doesnt even have a multifuncition switch. Sethro you might want to check the dimmer switch though which I believe is floor mounted on that model.

Unit 73, have you checked the headlamp switch pigtail for burned pins? You can also check for the same problem at the multifunction switch.
 
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Old Sep 5, 2003 | 08:57 PM
  #6  
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No Headlights

Homer, should i check any particular wires on the dimmer switch?
 
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Old Sep 5, 2003 | 11:21 PM
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No Headlights

Sethro,
The center (single) wire at the dimmer switch is the power from the headlight switch. On either side there are two wires on each terminal that go to the individual headlights. One side is for high beams and the other side for low beams.
 
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Old Sep 6, 2003 | 04:24 AM
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No Headlights

Thanks macguyver I am re-roofing my house and havent had time much for checking back on the forums to answer questions.
 
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Old Sep 6, 2003 | 04:52 AM
  #9  
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No Headlights

I think this applies to both of you with no lights try flipping from high to low and back a couple of times.Seen a lot of these switches get dirty or sticky or something and flipping it back and forth will clean it or unstick it or whatever.
 
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Old Sep 7, 2003 | 10:12 PM
  #10  
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No Headlights

Well, i took your advice and checked the dimmer switch... I now have lights..

thanks for the help
 
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Old Nov 18, 2003 | 10:52 PM
  #11  
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Re: No Headlights

Originally posted by HomerWinzlow
First obviously check your fuses. Then pull out the headlamp switch and unplug it and check for burned wiring terminals. Then check for proper power and ground to the various circuits. Ive seen many burned pigtail connectors on headlamp switches and you should replace the pigtail connector if you find it in that condition as well as the switch.
Where can I find a new light switch pigtail for my F350???
 
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Old Nov 19, 2003 | 04:48 AM
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I get mine from the dealer, whom usually stocks aftermarket pigtails as well as some factory replacements. I think that one is so common that the local Autozone type stores may carry it.
 
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Old Nov 19, 2003 | 08:39 AM
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Thank you...
 
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