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Wire color for steering wheel horn button

Discussion in 'Gen 3 Prius Technical Discussion' started by MrTea, May 9, 2012.

  1. MrTea

    MrTea Junior Member

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    Topeka, KS
    Vehicle:
    2012 Prius
    Model:
    Four
    Does anyone know which wire do I have to tap into to wire the horn button on the steering wheel and where the wire is located?
    I plan to use the horn switch for other purpose. :rockon:
     
    #1 MrTea, May 9, 2012
  2. ajtozzi

    ajtozzi Junior Member

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    Model:
    Two
    LT Blue
    (-) negative trigger
    Dash fuse box, white 40 pin plug, pin 24
     
    #2 ajtozzi, May 9, 2012
  3. MrTea

    MrTea Junior Member

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    Four
    Thanks. Do you have photos on how to get to that wire?
     
    #3 MrTea, May 9, 2012
  4. Seymour1

    Seymour1 Junior Member

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    2010 Prius
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    Three
    I need to find the horn button wire under the hood. There is a horn relay in the under-hood fuse block. The horn button should be connected to that relay with a wire. I looked briefly for a light blue wire but could not find it. I tried to find a circuit diagram without any luck.
    Today, I mounted my new fiamm horn (Farbin brand) and connected 12 volts and ground. It fits in front of the radiator. Now I need to connect the relay coil. I am connecting the new horn in an unusual manner.
    Thanks
     
    #4 Seymour1, Oct 10, 2024
  5. ChapmanF

    ChapmanF Senior Member

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    IV
    #5 ChapmanF, Oct 10, 2024
  6. Seymour1

    Seymour1 Junior Member

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    2010 Prius
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    Three
    I bought a Haynes manual but the horn circuit is not shown. I searched the wiring diagram pages 2 times. Maybe my library will have better manuals.
     
    #6 Seymour1, Oct 11, 2024
  7. RRxing

    RRxing Senior Member

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    Here ya go...
     

    Attached Files:

    #7 RRxing, Oct 13, 2024
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