Trailer Wiring question

Discussion in 'General Automotive Tech' started by zzzizxz, Dec 2, 2018.

  1. zzzizxz

    zzzizxz Well-Known Member

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    Thank you!!!

    Based on that, my 5-pin connector is at least 1/2 inch wider across than yours, and I do have the right 4-pin. I guess I'll be cutting that 5-pin off and installing a standard sized 5-pin!

    Thank you so much!
     
  2. HotRodRacer

    HotRodRacer Well-Known Member

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    Interesting! Well, glad you got it figured out. I have never seen a flat-5 as large as yours, but apparently they are out there!

    You're welcome, glad I could help.
     
  3. joe_padavano

    joe_padavano Well-Known Member

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    The flat five pin connector is the one that came from GM with the now missing mating pigtail. The five wires are the green and yellow turn signal wires, the brown tail light wire, a white ground wire and a blue aux wire intended to connect to a trailer brake controller.
     
  4. zzzizxz

    zzzizxz Well-Known Member

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    Do you have any idea the part number of that mating pigtail? Or any leads no how I could find that/what to search for?

    I know I can just cut it off and rewire a connector, but if I could find that pigtail, it would make things easier.

    Thank you!!
     
  5. joe_padavano

    joe_padavano Well-Known Member

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    The GM part number is 2987124, Harness, Trailer Wiring. It's been out of production for decades, so don't expect to find one.
     
  6. HotRodRacer

    HotRodRacer Well-Known Member

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    Joe you are a wealth of info. :thumbs2:
     
  7. HotRodRacer

    HotRodRacer Well-Known Member

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  8. HotRodRacer

    HotRodRacer Well-Known Member

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  9. HotRodRacer

    HotRodRacer Well-Known Member

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    Only two I found.
     
  10. joe_padavano

    joe_padavano Well-Known Member

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  11. zzzizxz

    zzzizxz Well-Known Member

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    Oh, so this was not a GM specific plug that came with a step-down attachment to fit the standard trailer plugs, this was just the size that trailer plugs were at this time?
     
  12. joe_padavano

    joe_padavano Well-Known Member

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    It appears that you can buy aftermarket ones on Amazon.

    [​IMG]

    [​IMG]
     

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