Question about 1994 Jeep Wrangler

2 Answers

I hit the brakes and the radio cuts out

I have a 94 Jeep Wrangler. The problem is two-fold: 1) I hit the brake and the radio cuts out and 2) The left turn signal is applied and it does not flash, it stays lit and does not flash. The manual says the light bulbs are out, but I have replaced all of them and the problem still exists.

Any help would be greatly appreciated.

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  • 8 more comments 
  • yomcneil May 22, 2009

    Thank you for your prompt responses. Yes, my stereo is after market.

  • yomcneil May 22, 2009

    to ourhowse: Yes, I do have both brake lights when I press the brake pedal.

  • yomcneil May 22, 2009

    To blamison:

    I did swap out the turn signal fuses and the problem still exists. I have looked at the firewall, and it is when the brake mechanism touches it that the radio shorts out.


  • yomcneil May 22, 2009

    To: blamison

    I will check the fuse tonight and follow up. I am also going to try to take the stereo out. The kicker is that I have not done any work on the Jeep, things were working fine. I just think it was the harsh Chicago winter that has introduced these electrical issues.


  • yomcneil May 26, 2009

    Thanks again for everyone's help. I am going to summarize all of the ideas that you folks have given me and show you what I have done as I am still unable to fix the problem.

    Problem is two-fold: 1) I hit the brake and the radio cuts out and 2) The left turn signal is applied and it does not flash, it stays lit and does not flash. The manual says the light bulbs are out, but I have replaced all of them and the problem still exists.

    I have not done any work on the Jeep, things were working fine. It was a rough Chicago winter and I park outside, driving once a week.


    Details:
    1994 Jeep Wrangler
    After Market Stereo
    Both brake lights work when I press the back pedal

    What I have done to troubleshoot:

    * I have looked at the firewall, and it is when the brake mechanism touches it that the radio shorts out.
    * Swapped out the turn signal fuses and the problem still existed.
    * Unplugged the power on the back of the stereo
    * I checked the back brake light near the back (where a lot of stones can hit the wires) I have both brake lights when I push the brake.
    * With the radio unhooked, someone mentioned the power wire or ground wire to the wrong thing. I have not modified the stereo at all, could it have corroded?

    * I tried to replace the flasher fuse for the turn signals because of my radio (aftermarket), but I could not get it out.
    This is the cylinderical thing that is blue on my Jeep.http://i171.photobucket.com/albums/u295/...

    - Can I break this when I take it out? How do you get it out?


    IDEAS and QUESTIONs I have?

    - Could the stereo be bad and make it short out? Do I need to take the stereo out? I unplugged the power on the back of the head unit.

    - I followed the wires under the dash, but I couldn't find the ground. Any ideas on where it could be?

    - Likely either a poor ground at the dashboard, once again, where would this be?

    Thanks again for all of your help,
    Mike






  • yomcneil May 28, 2009

    I appreciate the pointers. It has been raining in Chicago, I am anxious to get out and see if it solves the issue. I will give an update shortly.

  • yomcneil Jul 07, 2009

    Thanks, my stereo came back, and is working. Now it is just the left flasher does not work flash properly. I have replaced all of the light bulbs, but to no avail.

  • yomcneil Aug 03, 2009

    Thank you for all of your help. My electrical short issue has resolved itself. Now when I hit the brake, the radio does not cut out. Maybe it was wet and dried out?

    Thanks again!

  • Richard Scordino May 11, 2010

    Still betting on a bad ground, never saw a module fix itself. If wiring was incorrect it would still be that way.

  • Richard Scordino May 11, 2010

    Likely either a poor ground at the dashboard or bad body control module.

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  • Jeep Master
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I would say you have a problem in your brake light somewhere. Probably a short near the back, where a lot of stones can hit the wires. Do you have both brake lights when you push the brake?

Posted on May 22, 2009

  • Dar
    Dar May 22, 2009

    I think you better try it with your radio unhooked. Methinks somebody hooked up your power wire or ground wire to the wrong thing. Take it right out, and re- do the wiring.

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  • Expert
  • 68 Answers

I would say you need to replace the flasher fuse for the turn signals.is you radio aftermarket

Posted on May 22, 2009

  • kayla vanhorn May 22, 2009

    did you replace the flasher it should look like a little silver tube

  • kayla vanhorn May 27, 2009

    the flasher should just pull out it might be tight it just has three prongs on the back of it like a fuse

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