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Extra light cord socket on the back of the cab

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Hulld, Jun 19, 2016.

Page 1 of 2
  1. Jun 19, 2016 #1
    Hulld

    Hulld Road Train Member

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    looked at a 2007 freightliner Columbia today and it had two light cord sockets with multiple pins in each.
    I know one is for trailer lights but what is the second one for ?
     
    Hulld, Jun 19, 2016
    Hulld, Jun 19, 2016
    #1
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  3. Jun 19, 2016 #2
    Animosus

    Animosus Heavy Load Member

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    Probably pulled a dump trailer or something that needed additional wiring to the trailer.
     
    Animosus, Jun 19, 2016
    Animosus, Jun 19, 2016
    #2
  4. Jun 19, 2016 #3
    Hulld

    Hulld Road Train Member

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    One has a green cord running to the socket and the other has a yellow cord running to the socket.
    Both appear to have the same configuration and the same number of pins.
     
    Hulld, Jun 19, 2016
    Hulld, Jun 19, 2016
    #3
  5. Jun 19, 2016 #4
    dumptruck89

    dumptruck89 Light Load Member

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    It is probably for extra lighting, maybe to charge a lift gate or operate accessories on a trailer. Take a multi meter and flip switches on the dash to see what might have been powered.
     
    dumptruck89, Jun 19, 2016
    dumptruck89, Jun 19, 2016
    #4
    BUMBACLADWAR Thanks this.
  7. Jun 19, 2016 #5
    j_martell

    j_martell Light Load Member

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    Could be for work lights, 12V constant, lift axles, air locks for the tailgate (dump), tarping system.....

    Get a meter or a test light and start flipping switches, see what goes where....
     
    j_martell, Jun 19, 2016
    j_martell, Jun 19, 2016
    #5
  8. Jun 20, 2016 #6
    BUMBACLADWAR

    BUMBACLADWAR Road Train Member

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    Yep, the ole lift gate charging cord
     
    BUMBACLADWAR, Jun 20, 2016
    BUMBACLADWAR, Jun 20, 2016
    #6
    Dave_in_AZ Thanks this.
  9. Jun 20, 2016 #7
    Hulld

    Hulld Road Train Member

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    Upstate NY
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    The green works as normal trailer lights
    The yellow has the same pins but only the center pin is live when key is on and every other pin seams dead.
    Could it be something for a trailer with antilock brakes?
     
    Hulld, Jun 20, 2016
    Hulld, Jun 20, 2016
    #7
  10. Jun 20, 2016 #8
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Does it look like this?

    20160620_050000.jpg

    That's for a lift gate, don't buy that tractor unless you like PAIN.
     
    Dave_in_AZ, Jun 20, 2016
    Dave_in_AZ, Jun 20, 2016
    #8
    BUMBACLADWAR Thanks this.
  11. Jun 20, 2016 #9
    Blackshack46

    Blackshack46 Road Train Member

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    KIMG0307.JPG

    Probably for abs. Mine says something on the cover about the center pin abs amps. KIMG0310.JPG
     
    Blackshack46, Jun 20, 2016
    Blackshack46, Jun 20, 2016
    #9
    Hulld Thanks this.
  12. Jun 20, 2016 #10
    Hulld

    Hulld Road Train Member

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    Bingo!
    It's the yellow socket in your picture.
    I guess I should have put on my glasses and read what it said on the socket flapper lol
     
    Hulld, Jun 20, 2016
    Hulld, Jun 20, 2016
    #10
    Blackshack46 Thanks this.
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