No trailer brakes

Discussion in 'Towing & Transportation' started by Delta506, Aug 18, 2017.

  1. Delta506

    Delta506 SDD Junior Member

    Messages:
    1
    Likes Received:
    0
    Joined:
    Aug 18, 2017
    Location:
    Oklahoma
    Hello everyone
    I have a 2015 F350 and l'm having problems with the trailer brakes system.
    I have no power at the trailer 7 pin connection. Everything else works fine just no trailer brakes.
    Any ideas
     
  2. DaveBen

    DaveBen SDD Senior Member

    Age:
    68
    Messages:
    9,466
    Likes Received:
    54
    Joined:
    May 31, 2005
    Location:
    Ukiah, California
    Look in the Owners manual for a fuse or other protection device (fuse link?). That is all I have got...
     
  3. snicklas

    snicklas Super Moderator Staff Member

    Age:
    43
    Messages:
    381
    Likes Received:
    14
    Joined:
    Aug 10, 2008
    Location:
    Greenfield, Indiana
    I don't have that new of a truck, but on many older Fords, equipped with a factory towing package, a relay would have to be installed in the power distribution box for the brake controller and the charge line to have power. Not sure on the newer trucks.....
     
  4. 01yellerCobra

    01yellerCobra Full Access Member

    Messages:
    238
    Likes Received:
    51
    Joined:
    Jul 18, 2015
    Location:
    San Diego
    I would think the relay is there. I borrowed a buddies trailer and the trailer brakes worked awesome. As DaveBen said I'd look for a blown fuse or something.

    Or maybe the factory forgot to put the relay in. I just read where a guy pulled his intake and one of the knock sensors was never plugged in from the factory.

    Misspelling brought to you by Tapatalk
     
    Last edited: Aug 22, 2017
  5. SHOOTER

    SHOOTER SDD Junior Member

    Messages:
    1
    Likes Received:
    0
    Joined:
    Nov 13, 2009
    Location:
    SAN ANTONIO, TEXAS
    Check your owners manual for the trailer brake fuses, then the relay.

    Also check the connector on the drivers side under the rear of the truck. The 7 way branches off the main circuit at that point.
     

Share This Page