Trailer wiring harness 2008

Discussion in 'KK General Discussion' started by Anthony Shaffer, May 12, 2020.

  1. Anthony Shaffer

    Anthony Shaffer New Member

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    I got the 7 pin trailer wiring harness from a junk yard with the hitch. I need to know what colors are for what and where to connect them on the tail light any help is greatly appreciated I have a 08 jeep liberty
     
  2. turblediesel

    turblediesel memberable

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    From "Boater's Pocket Reference":

    White = common ground
    Red = left turn and stop
    Brown = right turn and stop
    Green = tail lights and license
    Blue = electric brake
    Black = battery charge
    Yellow = auxilliary

    Looking at the hitch end of the connector and going clockwise from one-o-clock the contact/wire colors are: Black, Brown, Blue, White, Red, Green, and Yellow in the center.

    My '05 KJ had a white with blue stripe wire for the electric brake.

    Look into a plug and play harness that uses the existing connectors on your lights and oem wiring. Much better than many types of splices. U-Haul or E-Trailer might have them.
     
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  3. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    Computerized module environment. Please don't go trying to splice anything in, when the correct harnesses/plug & play solutions are available for the kJ & KK.
    The wrong load/ short or incorrect wire placement could= a very bad day.
    Always disconnect your battery before doing any electrical work.
    Here is the correct e-trailer part # 118554 for the 2008+
    Install video is bottom left: https://www.etrailer.com/Custom-Fit-Vehicle-Wiring/Tekonsha/118554.html

    Few comments: IDK why they supplied a black wire to the+ battery, when it should be red.
    Possibly consider adding some split wire loom tubing over top, to further protect the black wire running all the way to battery.
    Also the butt connectors, I'd prefer to place heat shrink tubing, then solder the wires together for a much more reliable /waterproof connection.
    The auto heat shrink tubing is ok.
    The best sealing heat shrink tubing is a marine grade made by Ancor.
     
  4. daves06lrenegade

    daves06lrenegade Full Access Member

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    I was having problems with the brake and turn signal wiring to a Uhaul trailer because they use separate brake and turn signal feeds/lines... I bought this to convert jeep wiring to left/right/brake...
    (Hoppy Tail Light Converter 48845)... problem solved
    Dave
     
  5. Anthony Shaffer

    Anthony Shaffer New Member

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    Thanks everyone for your help