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2021 Tacoma JBL Head Unit Wiring

Discussion in 'Audio & Video' started by Chili, Jun 21, 2024.

  1. Jun 21, 2024 at 4:59 PM
    #1
    Chili

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    Chili [OP] Member

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    Have a 2021 Tacoma with JBL head unit. Does anyone know where the speed sensor wire is located?
     
    Chili, Jun 21, 2024
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  2. Jun 21, 2024 at 5:20 PM
    #2
    destin_meeks

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    destin_meeks I used to fix people's crappy stereos

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    Bigger question; what are you using it for?
     
    destin_meeks, Jun 21, 2024
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  3. Jun 22, 2024 at 2:53 PM
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    Chili

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    Chili [OP] Member

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    To bypass Nav lockout.
     
    Chili, Jun 22, 2024
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  4. Jun 22, 2024 at 3:13 PM
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    TnShooter

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    TnShooter The TacomaWorld Stray

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    My diagrams show it to be a purple (V) wire on the R48 plug. Pin #27

    Screenshot 2024-06-22 181034.png
    upload_2024-6-22_18-12-58.png
     
    TnShooter, Jun 22, 2024
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    Chili[OP] and Stevie17 like this.
  5. Jun 22, 2024 at 3:33 PM
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    Chili

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    Chili [OP] Member

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    Thank you sir. Would you happen to know how to test this wire? Does it use voltage? If so, AC or DC? Or does it send pulse signals?
     
    Chili, Jun 22, 2024
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  6. Jun 22, 2024 at 3:40 PM
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    TnShooter

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    TnShooter The TacomaWorld Stray

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    All I know is that it comes from the instrument cluster.
    It's the +S wire (purple) in the diagram below.

    Sorry, I can't help you more.
    But I have no idea what type signal it is.

    upload_2024-6-22_18-39-56.png
     
    TnShooter, Jun 22, 2024
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  7. Jun 22, 2024 at 3:45 PM
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    TnShooter

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    TnShooter The TacomaWorld Stray

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    Best I can tell is it's 5V

    upload_2024-6-22_18-45-28.png
     
    TnShooter, Jun 22, 2024
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  8. Jun 22, 2024 at 3:48 PM
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    Chili

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    Chili [OP] Member

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    Thanks for the info. Appreciate it.
     
    Chili, Jun 22, 2024
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  9. Jun 30, 2024 at 10:49 AM
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    Chili

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    Chili [OP] Member

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    For those interested, I tested and confirmed that the speed sensor wire is indeed Pin 27 on the R48 connecter. I installed switch and am able to bypass Nav lock when in motion. Thanks again TnShooter for the info.
     
    Chili, Jun 30, 2024
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