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Brake Lights Stay On

Discussion in 'Early CJ5 and CJ6 Tech' started by eldoradojim, May 15, 2024.

  1. May 15, 2024
    eldoradojim

    eldoradojim Member

    El Dorado, Ca
    Joined:
    Aug 11, 2022
    Messages:
    105
    Hi, the brake lights just started staying on recently....im guessing the pressure switch that is in the brake line must be bad? if i disconnect one wire from the switch the lights go out....im buying another switch , just want to see what you guys think....there are 2 switches ,one for front brakes and one for rear ...i disconnected the front one that was easy to get to.....69 cj5
     
    Ol Fogie, Twin2 and Glenn like this.
  2. May 15, 2024
    Brislin06

    Brislin06 Member

    Pennsylvania
    Joined:
    Oct 23, 2017
    Messages:
    145
    My jeep only has one switch in the front. I’ve had this happen to me two separate times. I would order a few extra, I think they were crown and we all know the reputation they have.
     
    eldoradojim and Ol Fogie like this.
  3. May 15, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
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    Feb 8, 2021
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    Look for a NOS, good brand switch. They do show up on Ebay from time to time.
     
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  4. May 15, 2024
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    Jan 23, 2014
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    4,243
    Is your brake pedal “tighter”, less free-play before it starts to apply the brakes? I’ve had my brakes start dragging as they warmed up, actuating the switch for the lights without ever touching the pedal.
    -Donny
     
  5. May 15, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
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    What Donny says makes a lot of sense. Usually when I have a switch fail it means the brake lights do not come on. If the brake pedal push rod is not adjusted to allow for some free play that could be the problem.
     
    eldoradojim and Renegade ll like this.
  6. May 16, 2024
    Rick Whitson

    Rick Whitson Detroit Area 2024 Sponsor 2022 Sponsor

    I live South of...
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    Ron Frances Electric, has whatever you need when it comes to 12V stuff.
     
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  7. May 17, 2024
    eldoradojim

    eldoradojim Member

    El Dorado, Ca
    Joined:
    Aug 11, 2022
    Messages:
    105
    this is a pressure switch in the brakeline with a tee....pressure is how it works.no adjustment
     
  8. May 17, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
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    Yes, I have been working on old Jeeps for about fifty years and know that the switch is a pressure switch and there is no adjustment for that. The adjustment I referred to is with the brake pedal push rod, just as I said. If there is not enough free play in that the "pressure switch" will be under constant pressure.
     
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  9. May 17, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
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    Pretty simple concept, I think.
     
    eldoradojim likes this.
  10. May 22, 2024
    eldoradojim

    eldoradojim Member

    El Dorado, Ca
    Joined:
    Aug 11, 2022
    Messages:
    105
    sorry, I misunderstood what you were saying, thought you were thinking it was a different switch...I changed the switch and brake lights work again....thanks
     
  11. May 22, 2024
    eldoradojim

    eldoradojim Member

    El Dorado, Ca
    Joined:
    Aug 11, 2022
    Messages:
    105
    thanks guys, I bought a "standard" brand switch, brake lights are working again
     
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