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Trailer clearance lights low voltage

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Son, Feb 18, 2016.

  1. Feb 18, 2016 #1
    Son

    Son Light Load Member

    130
    158
    Jun 17, 2012
    Middle Tennessee
    0
    Been loosing trailer clearance lights intermittently. They dim for a second then they're gone.
    Low voltage at the 7 way plug. Replaced dash switch, fuse & relay. Cleaned up wiring to plug.
    They always come back sooner or later. No other circuits effected.
    2006 KW
    Need to get this right, any ideas?
     
    Son, Feb 18, 2016
    Son, Feb 18, 2016
    #1
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  3. Feb 18, 2016 #2
    CrappieJunkie

    CrappieJunkie Wishin' I was fishin'

    3,996
    19,137
    Mar 9, 2014
    In a van down by the River.
    0
    You hauling same trailer all the time? I know when I was otr I had several trailers do this to me. I usually took a pocket knife and split the prongs on the plug a bit. Nothing major as you dont want to break thsm just enough to seperate them. Could also replace electrical line too see if that works.
     
    CrappieJunkie, Feb 18, 2016
    CrappieJunkie, Feb 18, 2016
    #2
  4. Feb 18, 2016 #3
    Son

    Son Light Load Member

    130
    158
    Jun 17, 2012
    Middle Tennessee
    0
    Yea its the same trailer but the problem is in the tractor. Low voltage at the tractor side of the plug. I appreciate it though
     
    Son, Feb 18, 2016
    Son, Feb 18, 2016
    #3
  5. Feb 18, 2016 #4
    Luwi67

    Luwi67 Heavy Load Member

    749
    484
    Oct 24, 2012
    Long island
    0
    Find and check your trailer ground wire on the tractor. On my Pete it is located at the bottom corner of the drivers side firewall facing the engine.
     
    Luwi67, Feb 18, 2016
    Luwi67, Feb 18, 2016
    #4
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