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91 Explorer - no brake lights

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Old Dec 1, 2012 | 07:19 PM
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91 Explorer - no brake lights

Hi folks,

I just got a '91 Explorer. It has no brake lights at all. I've checked all the fuses and everything's fine there.

What's the next thing to look at? I can't say I've seen this problem before.

Thanks...
 
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Old Dec 1, 2012 | 08:46 PM
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Do the rear turn signals work? If they do, then your problem is most likely the switch on the brake pedal with two wires plugged into it. Pretty easy to replace.
 
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Old Dec 1, 2012 | 10:27 PM
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have u checked the obvious like the earth lead at the lights and also the light bulbs loose or corroded conections... then yes look at the button under the pedal
 
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Old Dec 2, 2012 | 08:30 AM
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Originally Posted by Aussie-crow
have u checked the obvious like the earth lead at the lights and also the light bulbs loose or corroded conections...
That's why I asked if the rear turn signals work. The turn signal lights and brake lights are one and the same on first gen Explorers. If the rear turn signals light up, then there's nothing wrong with the bulbs or connections at the back.
 
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Old Dec 2, 2012 | 09:03 AM
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Turn signals do work fine.

Did the '91 have the brake pedal interlock where you couldn't shift out of park if the brake switch was malfunctioning? Because I can shift out of park just fine.

I'll have a look at the brake switch this morning -- that sounds like the culprit.
 
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Old Dec 2, 2012 | 12:53 PM
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Now it appears that only the third brake light is working, not the left or right.

My turn signal stalk is broken off -- there's nothing there but a hole. The wiring diagram makes it appear that this might affect the operation of the brake lights. Thoughts?
 
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Old Dec 2, 2012 | 01:56 PM
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Originally Posted by flainn
Now it appears that only the third brake light is working, not the left or right.

My turn signal stalk is broken off -- there's nothing there but a hole. The wiring diagram makes it appear that this might affect the operation of the brake lights. Thoughts?
I agree, a broken turn signal switch might cause the problem. On my wiring diagram, it looks like the left and right brake lights run through the turn signal switch, but the third light does not.

At any rate, you can rule out the brake pedal switch by disconnecting the wires from it and putting a jumper from one wire to the other. Brake lights now on = bad pedal switch; brake lights still off = problem somewhere else.
 
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Old Dec 2, 2012 | 03:25 PM
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Originally Posted by One Sock
I agree, a broken turn signal switch might cause the problem. On my wiring diagram, it looks like the left and right brake lights run through the turn signal switch, but the third light does not.

At any rate, you can rule out the brake pedal switch by disconnecting the wires from it and putting a jumper from one wire to the other. Brake lights now on = bad pedal switch; brake lights still off = problem somewhere else.
Yep, I did just that -- jumpered the switch -- and still get just the third brake light but neither tail light.

The hazard flashers work fine, but the wiring diagram shows that's on a separate flasher from the regular turn signals.

I guess I'll get on eBay and try to find a turn signal / high beam / windshield wiper stalk and replace it, then troubleshoot from there.
 
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Old Dec 3, 2012 | 11:17 AM
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Ok, I snagged a used-but-tested turn signal/hi-beam/windshield wiper switch on eBay for $20. Should be here in a few days.

Do you folks have tips on how to take apart the steering column?
 
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Old May 19, 2013 | 08:54 PM
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Oops, I meant to check back in here and forgot... sorry for dredging such an old thread.

Replacing the turn signal switch solved the problem.
 
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Old May 20, 2013 | 07:06 AM
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Glad to hear it, and thank you for following up. Better late than never.

-Rod
 
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