Quick trailer wiring question

Discussion in 'Trucks and Trailers' started by grassmanak, Mar 21, 2007.

  1. grassmanak

    grassmanak LawnSite Senior Member
    Posts: 792

    I have a rental truck right now and i need to switch my wire over to a 4 pin round connecter. I currently have a 6 pin round. Im not gonna use the brakes, what wire go to what. I have a

    big black

    and then 4 way has a


    CLARK LAWN LawnSite Silver Member
    Posts: 2,526

    white is ground,brown is tail lights and green and yellow are turns dont remember witch is witch just use a test light and you will be able to tell
  3. GG386

    GG386 LawnSite Member
    Posts: 58

    I'm pretty sure you can pick up an pre made adapter at any of the chain auto parts stores like Pep, Napa, Auto Zone etc.

    Sure will make your life a lot easier than trying to rig something ad hoc.
  4. cet

    cet LawnSite Member
    from Toronto
    Posts: 89

    yellow is left signal and green is right signal. I think the adaptor is to go from 6 or 7 round on the truck to 4 wire flat on a trailer. I don't think they make it the other way but might be wrong.
  5. AbsoluteH&L

    AbsoluteH&L LawnSite Member
    Posts: 155

    gReen - Right
    yeLLow - Left
    brown - tail
    white - ground
    The blacks could be brake, reverse, or charge( for elec, brakeaway brake battery). You can find the brake one by puting power to it, the magnets will put out a small hum. Maybe you don't have reverse lights, but I don't know that. Good luck:)

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