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Headlights Won't Go On ?

  • Thread starter Thread starter Joner5.OH
  • Start date Start date Jun 3, 2017

Joner5.OH

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Jun 3, 2017
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  • Jun 3, 2017
  • #1
okay so I have a 1991 lx hatch and the head lights won't go on unless I hold the brights on and the turn signals only work on the right side ? Eny help??
 

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More than likely the turn signal switch.
 

jrichker

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Jun 3, 2017
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74stang2togo said:
More than likely the turn signal switch.
Click to expand...
That's the place to start...

Multifunction turn signal switch:
Before you think about replacing the multifunction switch with one from the junkyard, here are some things to be aware of...

The problem is more common in GT models because they had fog lights on the same power wiring as the headlights. Ford undersized the wire and that caused problems.

A word of caution about multifunction switches is in order here. The multifunction switch (high/low beam, wiper, turn signals) are different for different years. 87-98 will work in any 87-89 car. The 90-93 switches only work in 90-93 cars. You can't put an early model switch in a late model car, nor can you put a late model switch in an early car.

Supposedly you can move the pins around to make the switches work in model years that are different from the car the switch came out of. I cannot verify that and haven’t tried it.

Other possible problem sources for the turn signal & headlight malfunction are the ignition switch, multifunction switch and the plastic shell that holds the turn signal wiring connector pins.

The following diagram is for 87-89 model cars.

Turn signal switch wiring:


The following diagram is for 90-93model cars.

Turn signal switch wiring:
 
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