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7 pin to 4 pin harness/adapter

Discussion in '2nd Gen. Tacomas' started by TacoDawgs, Jun 26, 2011.

  1. Jun 26, 2011 at 3:57 PM
    #1
    TacoDawgs

    TacoDawgs [OP] Well-Known Member

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    I am the proud owner of a brand new (to me anyway) 2008 Tacoma 4x4 OR w/tow package as of yesterday and I couldn't be happier. Since the truck was used it didn't come with the 7pin to 4pin wiring harness that comes with new trucks (or at least I haven't found it). I know there is also a 7pin to 4pin adapter. So here's my probably stupid question so go easy...what the hell is the difference between the harness and adapter and do I need both? Thanks alot.
     
  2. Jun 26, 2011 at 4:09 PM
    #2
    DueNorth

    DueNorth Well-Known Member

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    No you don't need both since your truck already comes with a 7 pin plug and wiring harness. The 7 - 4 pin adapter just allows you to connect the two.
     
  3. Jun 26, 2011 at 4:38 PM
    #3
    Teniente

    Teniente Well-Known Member

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    You should be able to go to your local NAPA store and get the 7 pin to 4 pin adapter plug
     
  4. Jun 26, 2011 at 4:49 PM
    #4
    horwitzs

    horwitzs Well-Known Member

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  5. Jun 26, 2011 at 5:23 PM
    #5
    TacoDawgs

    TacoDawgs [OP] Well-Known Member

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    Thanks for the help. Quick question though, what is the 7-4 pin wiring harness and what's it use for?
     
  6. Jun 26, 2011 at 5:36 PM
    #6
    95tojo

    95tojo Roamer

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    The 7 pin "RV" plug includes brake lights, running lights, turn signals, powered brakes and back up lights. The 4 pin harness just has brake lights, turn lights, and running lights.

    If i was you i would just cut the 4 pin off and wire up a 7 pin adapter to your trailer so you don't have to worry about an adapter between the two
     
  7. Jun 26, 2011 at 9:41 PM
    #7
    dexterdog

    dexterdog My pee parts itch

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    It's not a harness. It's an adapter plug. It has 7 female pin holes on one end and 4 on the other.
     
  8. Jun 27, 2011 at 7:05 AM
    #8
    skytower

    skytower Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    If you do go the adapter route, get the one with LED indicator lights on it. It'll easily identify if you have a trailer or truck wiring/light issue.
     
  9. Jun 27, 2011 at 7:09 AM
    #9
    Pugga

    Pugga Pasti-Dip Free Since 1983

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  10. Jun 27, 2011 at 8:54 AM
    #10
    kris77

    kris77 Born in the Backwoods

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    Good advice here...

    although everyone of my issues has always been on the trailer end.
     
  11. Jun 27, 2011 at 12:10 PM
    #11
    dexterdog

    dexterdog My pee parts itch

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    Hey thanks.
     
  12. Jun 27, 2011 at 12:15 PM
    #12
    anethema

    anethema Well-Known Member

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    Question has been kind of answered so a mini-hijack might be ok but...

    I also have a 08 tacoma i bought used and it has tow package. I see the guy installed a electronic brake controller screwed to my drivers side console thing.

    If the factory 7 pin includes a electric brake pin, does Toyota just not include a controller from the factory ? Or how does that all work ?

    Thanks!
     
  13. Jun 27, 2011 at 4:54 PM
    #13
    dexterdog

    dexterdog My pee parts itch

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    No, you have to buy the controller but there is a plug under the dash.
     
  14. Jun 27, 2011 at 6:19 PM
    #14
    fastboy559

    fastboy559 Well-Known Member

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    i just bought a new 11 with tow package is it supposed to come with the adapter to 4 pin
     
  15. Dec 29, 2011 at 9:47 PM
    #15
    TacomaPrime

    TacomaPrime Cybertronian Tacoma

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  16. Dec 30, 2011 at 6:07 AM
    #16
    Flyfisher22

    Flyfisher22 Well-Known Member

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    Cam
     
  17. Dec 30, 2011 at 7:52 PM
    #17
    DIVERMAN

    DIVERMAN Well-Known Member

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    my 12 didn't come with one.
     
  18. Dec 30, 2011 at 8:21 PM
    #18
    Rodallg

    Rodallg Well-Known Member

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