5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Why the disco headlights? Someone help

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Old 11-25-2008, 12:25 PM
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91stangy
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Default Why the disco headlights? Someone help

So when i turn my headlights on everything is fine and dandy. But all of a sudden now that i put my fog lights on after a minute or two everything starts flashing. Why is this happening? Someone please point me in the right direction as i only had time to search for a few minutes because im at work.
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Old 11-25-2008, 12:30 PM
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1988TTOP
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the head light switch is bad
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Old 11-25-2008, 12:36 PM
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1988TTOP
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here is a repair kit made for the 90-93 stang gt alittle pricey but it will fix them

http://www.latemodelrestoration.com/...0%201&comp=LRS
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Old 11-25-2008, 12:39 PM
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93 LX FiveO
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the wiring is too small from the factory to handle the current load

if ur good at wiring u can just replace the factory wire with thicker gauge

problem solved
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Old 11-25-2008, 01:04 PM
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Slo5oh
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is there any worry of fire with this?
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Old 11-25-2008, 01:07 PM
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Project 5.GO!
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Originally Posted by 91stangy
So when i turn my headlights on everything is fine and dandy. But all of a sudden now that i put my fog lights on after a minute or two everything starts flashing. Why is this happening? Someone please point me in the right direction as i only had time to search for a few minutes because im at work.
The factory wiring is too small to handle the load of the headlights and fog lights on the same circuit. If you can follow directions step by step, this is a write-up that will solve all that. Let us know how it goes!

http://www.corral.net/tech/maintenance/foglights.html
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Old 11-25-2008, 04:07 PM
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91stangy
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already replaced the headlight switch and the multifunction switch, so those are out. I guess i will follow the rewire directions. Thanks Guys
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