Headlights and fog lights not working

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dbrennancobra
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Headlights and fog lights not working

Post by dbrennancobra »

Ok guys, so my headlights and fogs stopped from coming on. When I switch the toggle the cluster comes on and then parking lights come on, but then the third switch the headlights don't come on. Nor do the fogs. Any idea?
2004 svt Cobra Mystichrome Convertible STOCK
1967 mustang Coupe STOCK Red/Black - SOLD
1993 Cobra STOCK Red/Black #1264 SOLD
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1993cobra
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Re: Headlights and fog lights not working

Post by 1993cobra »

head light switch? or connector to the switch? or ground,
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vinchez78
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Re: Headlights and fog lights not working

Post by vinchez78 »

:shock: Lights on DB COBRA not workin??!!!!!! :shock:
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Romo93
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Re: Headlights and fog lights not working

Post by Romo93 »

It's usually a bad switch. Tons of threads everywhere on this issue and more times than not, it's the switch. :headbang:
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dbrennancobra
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Re: Headlights and fog lights not working

Post by dbrennancobra »

Tried a new headlight/fog switch didn't fix. But the muilti switch when I put high beams on it works... You think it could be the muiltifunction console switch?
2004 svt Cobra Mystichrome Convertible STOCK
1967 mustang Coupe STOCK Red/Black - SOLD
1993 Cobra STOCK Red/Black #1264 SOLD
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Re: Headlights and fog lights not working

Post by Cobra Jet »

As previously noted, malfunction or intermittent operation of the 87-93 fog lights, headlights or both is due to the factory circuitry. It's a very well known issue that plagued the 87-93 GT's and Cobras. There was an old Ford TSB on the subject - never a recall.

While some original owners as well as secondary+ owners may have never experienced a failure, it could be because those owners do not daily drive the vehicle OR they don't use the fog lights as heavily as other 87-93 owners. The failure was more prevalent in vehicles where the fogs were used every time the headlights were used.

When the fogs were used excessively, eventually the multi-function switch fails. There is a plastic slider within the MF switch. That slider makes the connection for High, Low and Flash to Pass. Due to the factory circuitry not being able to handle the load of the headlights AND the fog lights being on for extended periods of time, the slider eventually melts.

Besides damage to the MF switch, this also can happen (please view this thread to see other damage that can occur). In severe cases, this can be a safety/fire hazard:
http://forums.corral.net/forums/general ... nside.html

I would recommend any 87-93 GT/Cobra owner to thoroughly check the wiring and connector as noted and seen in the 1st link above. After checking the wiring and connector, replace the MF switch AND follow the steps in this 2nd link below:
http://www.corral.net/tech/maintenance/foglights.html

Failing to fix or ignoring the problem by rewiring can result in another MF switch failure in the future and/or possible other harness/connector damages as seen in 1st link.

Hope that info helped you and others who may run into this issue in the future.
- Phil
1994 Cobra coupe SVT #13
dbrennancobra
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Re: Headlights and fog lights not working

Post by dbrennancobra »

wow thanks man! looks like I got my work cut out for me.. never ends.
2004 svt Cobra Mystichrome Convertible STOCK
1967 mustang Coupe STOCK Red/Black - SOLD
1993 Cobra STOCK Red/Black #1264 SOLD
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93svt#2779
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Re: Headlights and fog lights not working

Post by 93svt#2779 »

dbrennancobra wrote:wow thanks man! looks like I got my work cut out for me.. never ends.
I feel ya bro...that's why I drive mine, going to have to fix crap either way! might as well enjoy all the money we spend! ;)
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vinchez78
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Re: Headlights and fog lights not working

Post by vinchez78 »

93svt#2779 wrote:
dbrennancobra wrote:wow thanks man! looks like I got my work cut out for me.. never ends.
I feel ya bro...that's why I drive mine, going to have to fix crap either way! might as well enjoy all the money we spend! ;)
Amen to that :headbang:
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Re: Headlights and fog lights not working

Post by Georgia Snake »

I have a modification for this issue that will allow for the use of the Fogs without the headlights on and also with the High Beams on. I had posted it at one time on Elitestangs web site on the Ask the Snake thread.

The Snake

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