6 way plug problem on goose neck

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Boundtransport, Jun 20, 2021.

  1. Boundtransport

    Boundtransport Light Load Member

    70
    18
    Nov 1, 2018
    U.S.A.
    0
    image.jpg image.jpg image.jpg image.jpg
    image.jpg
    This is exactly as pictured above. I have no trailer brakes still. What else could it be? Maybe a wire detached.. from the back though this looks ok.
    image.jpg
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Boundtransport

    Boundtransport Light Load Member

    70
    18
    Nov 1, 2018
    U.S.A.
    0
    I think I found the issue FDBEFF79-B869-45E0-9C24-262411BF5D0C.jpeg


    Where marked. The wire pull apart somehow. Idk. Gonna strip it. Put them back together. I’ll update.
     
  4. Boundtransport

    Boundtransport Light Load Member

    70
    18
    Nov 1, 2018
    U.S.A.
    0
  5. Lucky12

    Lucky12 Medium Load Member

    600
    2,297
    Nov 24, 2019
    0
    I was thinking same thing. If you take a test light or voltmeter and check the two black wires with the truck ignition on, the one that's not hot is likely the brake wire. Then test that one (the one that wasn't hot) while somebody presses the brake lever on the truck or brake control. It should incrementally apply more voltage (test light will get brighter) as they mve the lever.

    Since you have no brakes, the presumption is that you don't get anything.

    If this is a newer truck with an integrated brake controller, you need to check the fuse. The owners manual should tell you which fuse it is.

    Edit: Likely irrelevant due to later post identifying issue.
     
  6. clausland

    clausland Road Train Member

    1,933
    11,066
    Dec 5, 2014
    North Woods
    0
    Looks like you're finding more issues. I never liked the way most goosenecks have their brake wiring configured, cheesy at best, crappy non-weatherproof connectors, too small a gauge wiring, always prone to failure....
     
  7. Boundtransport

    Boundtransport Light Load Member

    70
    18
    Nov 1, 2018
    U.S.A.
    0
    image.jpg

    Well this morning I fixed the wire in the back. No brakes... hmmm. Check the fuse. Damaged. Ok. Excellent this was the problem WRONG!!!
    I put the new one in, when to put in drive felt the trailer brake engaged. Hmmm but no brake function on the integrated brake either. Maybe I go the black wires wrong!? Idk. I’ll update when I change them.
     
  8. Boundtransport

    Boundtransport Light Load Member

    70
    18
    Nov 1, 2018
    U.S.A.
    0
    Nothing. But brake is definitely engaged when I put the truck in drive. Checked the breakaway to see maybe if it became loose. Nope. At this point I’m not sure.
     
  9. lester

    lester Midwest's #1 Feed Hauler

    2,807
    7,450
    Jan 2, 2012
    NW, Iowa
    0
    If your brakes are locked on now you've got a wire in the wrong spot on the plug. I've had that happen with a different pickup that must have been wired different.
     
  10. baha

    baha Road Train Member

    4,137
    2,832
    Jul 25, 2013
    ga
    0
    You need to zip tie all the brake wires up or you will have broken wires every time you ck. to see why brakes are not working?
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.