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3rd Gen Style 7/4 Pin Trailer Plug DIY

Discussion in '2nd Gen. Tacomas (2005-2015)' started by steveo27, Apr 24, 2023.

  1. Apr 24, 2023 at 9:34 PM
    #1
    steveo27

    steveo27 [OP] Ask me about my weiner

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    The same shit everyone else has.
    UPDATE - SEE POST #6 FOR MORE INFO/DIY.

    I’m in the process of fixing a buncha little random things on my truck….

    Like most Tacomas, my 7 pin plug is pretty beat up and damaged.

    Since I’m replacing it, I might as well upgrade it too.

    3rd gens come with a 7 pin / 4 pin combo (see below)



    Has anyone updated their 7 pin to this new style plug?

    I’d like to relocate it up to the bumper right next to the plate like I see people do with the 7 pins.

    I’m assuming the 2nd gen male plug isn’t the same as the 3rd gen plug just because.

    Id rather not have to cut/splice the OEM hardness, but I don’t mind having to depin/repin.

    Id love to get any input from anyone who’s done this/thought about doing this.

    Thanks.
     

    Attached Files:

    Last edited: May 1, 2023
  2. Apr 25, 2023 at 5:15 AM
    #2
    TegoTaco

    TegoTaco Well-Known Member

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    I’m sure it can be done. Seems pretty straight forward, just have to figure out where to mount it. Ask the 3rd gen forum for a pic of the harness.
     
  3. Apr 25, 2023 at 5:27 AM
    #3
    cfcarpenter

    cfcarpenter Well-Known Member

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    Would you need a converter box for the 4wire? The older trucks would always need a 5 to 4 wire converter for the tail/brake lights to work properly. Might be wiring in a separate harness to make that work.
     
  4. Apr 25, 2023 at 8:04 AM
    #4
    clenkeit

    clenkeit Well-Known Member

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    I too went down this rabbit hole and ended up just bailing on the idea as it wasn't immediately important. Your best bet will be to use an aftermarket 4/7 pin combo connector rather than the OEM one. The G2 and G3 Tacoma wiring for the trailer wiring use completely different style connectors and different wires/pins as well so you can't just easily re-pin it. You'll want to get generic, aftermarket parts then cut/splice into your existing wiring.

    There may be something out there but after weeks of searching for a plug n play solution I gave up.


    Here are a bunch of threads that were helpful for me:
    https://www.tacomaworld.com/threads...e-snap-some-pics-for-me.787171/#post-28167297
    https://www.tacomaworld.com/threads/7-pin-trailer-harness-plug-replacement-tip.288024/
    https://www.tacomaworld.com/threads/trailer-plug-relocation.380406/
     
  5. Apr 25, 2023 at 8:36 AM
    #5
    steveo27

    steveo27 [OP] Ask me about my weiner

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    '11 TRD Off Road & 1992 VW GLI
    The same shit everyone else has.
  6. May 1, 2023 at 6:08 PM
    #6
    steveo27

    steveo27 [OP] Ask me about my weiner

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    The same shit everyone else has.
    Welp, here’s my solution.

    Purchased the Hopkins 41144.

    https://www.amazon.com/gp/aw/d/B00YJGC6C6?ref=ppx_pop_mob_b_asin_title

    It’s a 7/4 pin combo that looks similar to the 3rd gen unit.

    I started by taking notes.

    upload_2023-5-1_20-56-54.jpg

    Then I dissected the factory harness/plug and depinned it.

    upload_2023-5-1_20-56-35.jpg

    upload_2023-5-1_20-58-6.jpg

    Then I took the Hopkins plug and depinned it as well.

    upload_2023-5-1_20-58-55.jpg

    upload_2023-5-1_20-59-8.jpg

    Then I removed the pins/seals from the Toyota harness.

    upload_2023-5-1_21-0-9.jpg

    And stripped the ends.

    upload_2023-5-1_21-0-25.jpg

    Then I stripped the pins/seals off the Hopkins harness.

    upload_2023-5-1_21-1-25.jpg

    I opened the pins back up and crimped them onto the Toyota harness after adding the Hopkins seals to it.

    upload_2023-5-1_21-2-42.jpg

    I added a bit of solder just to be sure.

    upload_2023-5-1_21-3-11.jpg

    Then I matched the Toyota wiring up to the Hopkins plug and repinned it.

    upload_2023-5-1_21-4-5.jpg

    upload_2023-5-1_21-4-21.jpg

    Now the aftermarket 7/4 pin trailer plug will plug into the factory harness.

    upload_2023-5-1_21-5-32.jpg

    upload_2023-5-1_21-5-46.jpg

    upload_2023-5-1_21-6-9.jpg

    I just need to mount somewhere now.

    Hopefully this helps.
     
  7. May 1, 2023 at 9:41 PM
    #7
    caribe makaira

    caribe makaira Well-Known Member

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    Orange Nimbus and clenkeit like this.
  8. Jun 22, 2023 at 8:36 AM
    #8
    fatfurious2

    fatfurious2 IG: great_white_taco

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