1. pearljam724

    pearljam724 Well-Known Member

    Messages:
    973
    Likes Received:
    402
    Joined:
    Oct 14, 2018
    Location:
    U.S.
    Local Time:
    10:44 AM
    Would someone be so kind to explain what this little valve looking thing is and what exactly it does ? It’s part of the junction block that the 2 master cylinder lines hook into.

    18ED15E2-ABD8-4C85-8326-D87FABDC8B6A.jpeg
     
  2. R413

    R413 Well-Known Member

    Messages:
    359
    Likes Received:
    552
    Joined:
    Feb 4, 2019
    Location:
    NW USA
    Local Time:
    7:44 AM
    Does that have an electrical wire going to the other side? Is that the brake warning light switch?
     
  3. Ernie ingling

    Ernie ingling Well-Known Member

    Messages:
    134
    Likes Received:
    89
    Joined:
    Jun 8, 2019
    Location:
    Cocoa Fla
    Local Time:
    10:44 AM
    That’s what it is wire attaches to round center post. If pressure is lost in ft or r the valve inside slides and grounds switch brake warning comes on. You will still have 1/2 braking to limp home.
     
  4. pearljam724

    pearljam724 Well-Known Member

    Messages:
    973
    Likes Received:
    402
    Joined:
    Oct 14, 2018
    Location:
    U.S.
    Local Time:
    10:44 AM
    Thanks, guys. Does it look like the oem wire you speak of. Should mate with this connection pictured ? I have a standard non rallye gauge. My brake light works for the parking brake on the gauge. Would the wire you guys speak of trigger the same parking brake light ? I’ve been all over my firewall inside and out and never came across a wire available. Not saying there isn’t. Thank you, both
     
  5. Demonic

    Demonic Well-Known Member

    Messages:
    523
    Likes Received:
    436
    Joined:
    Jun 5, 2017
    Location:
    Over the hills, far away
    Local Time:
    10:44 AM
    Looks like an aftermarket proportioning valve - factory is mounted lower, by the frame rail. You're looking for one black wire.
     
    • Agree Agree x 1
    • pearljam724

      pearljam724 Well-Known Member

      Messages:
      973
      Likes Received:
      402
      Joined:
      Oct 14, 2018
      Location:
      U.S.
      Local Time:
      10:44 AM
      Yes, it’s aftermarket. It ties into the factory one down by the frame rail. Do you have have a picture of this black wire ? Should it run from 1 of the 3 electrical connectors on the firewall, beside the power booster ? Id like to see what that factory terminal looks like at the end of the black wire. Was it a spade or was it round ? I looked and couldn’t find anything. Thanks
       
    • chtampa

      chtampa FBBO Gold Member FBBO Gold Member

      Messages:
      1,023
      Likes Received:
      1096
      Joined:
      Nov 24, 2013
      Location:
      Tampa, FL
      Local Time:
      10:44 AM
      The wiring plug is available separately.
       
      • Thanks! Thanks! x 1
      • mopar 3 B

        mopar 3 B Well-Known Member

        Messages:
        8,676
        Likes Received:
        6034
        Joined:
        Aug 25, 2014
        Location:
        Kingsville, MO
        Local Time:
        9:44 AM
        The wire end would be round.
         
        • Thanks! Thanks! x 1
        1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
          By continuing to use this site, you are consenting to our use of cookies.