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'72 brake light switch

Discussion in 'Intermediate CJ-5/6/7/8' started by karlvin08, Dec 20, 2006.

  1. Dec 20, 2006
    karlvin08

    karlvin08 I R SMRT

    Clarksville, TN
    Joined:
    Aug 30, 2006
    Messages:
    81
    I replaced my master cylinder today on my '72 and decided that since my brake lights have been operating off of a toggle switch for about a year now that I would go ahead and put a new pressure switch in so they worked right again (old master cylinder the port for the switch was plugged with crap). Anyway i put the new switch in and still no brake lights. Is there some sort of way that you have to bleed the switch or something?
     
  2. Dec 20, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
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    9,221
    No need to bleed it.

    Did you check to be sure you were getting 12V to one side of the switch?
     
  3. Dec 20, 2006
    LostDawg

    LostDawg Slowly rusting in the NW

    Longview, WA
    Joined:
    Sep 24, 2006
    Messages:
    300
    Also make sure pedal is making contact with switch? On mine ('73) after rewiring, the switch wasn't sitting in the bracket correctly, therefor not allowing contact. (Wish I had checked that before going staight to the lights and re-doing all my connections!:oops: )
     
  4. Dec 20, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    No contact to make, it's a pressure switch on '72s.
     
  5. Dec 20, 2006
    LostDawg

    LostDawg Slowly rusting in the NW

    Longview, WA
    Joined:
    Sep 24, 2006
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    300
    I knew I'd be corrected, that's why I specified mine was a '73!R) I'm learnin'!:)
     
  6. Dec 20, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    I only knew that because I've done the brakes on a '72. ;)
     
  7. Dec 20, 2006
    karlvin08

    karlvin08 I R SMRT

    Clarksville, TN
    Joined:
    Aug 30, 2006
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    81
    Yes there is 12 volts to one wire. When i touch the two wires together the brake lights come on, and when i take the switch out of the master cylinder fluid comes out when i press on the pedal so i am thinking maybe i got a bad switch, i just have no way to test to verify for sure without getting another one. I have had this one for a while but it was still new. I only paid i think a buck fifty or so for it so i guess i will try a new one. I'll be starting a new thread after i get back from dinner on the rest of the questions i came up with today.

    Karl
     
  8. Dec 20, 2006
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    9,221
    Interesting.

    Sounds like it could be a bad switch. Perhaps someone else here will know more.
     
  9. Dec 20, 2006
    CEEJAY5

    CEEJAY5 Jeep Addict

    Columbia, SC
    Joined:
    May 30, 2006
    Messages:
    116
    One thing you have to make sure is that the switch is appropriate for brake setup. If you installed a power brake booster, "be sure that whatever switch you get is rated for the increased pressure of the power assisted brakes."
     
  10. Dec 20, 2006
    karlvin08

    karlvin08 I R SMRT

    Clarksville, TN
    Joined:
    Aug 30, 2006
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    CEEJAY5 no power booster just plain old manual, I already put power steering in if I did power brakes next thing you know it would be nice enough the wife would want to drive it. R) R) R)
     
  11. Dec 21, 2006
    a72cj

    a72cj Member

    B.C. Canada
    Joined:
    Jan 3, 2004
    Messages:
    55
    I would suspect the switch. I have put in an average of one switch a year on my 72. I can't remember the brand name but ask at your flaps for the best quality manufacturer. My last switch has lasted 2 years. Does blue streak ring a bell as a manufacturer? I think that is what I got last time.
     
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