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Reverse Light for Rear Camera Trigger Error

Discussion in 'Gen 3 Prius Audio and Electronics' started by jonathanrn, Mar 1, 2018.

  1. jonathanrn

    jonathanrn New Member

    Joined:
    Jul 28, 2017
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    Location:
    SF Bay Area
    Vehicle:
    2011 Prius
    Model:
    II
    I've installed a Kenwood DDX9703 successfully in my Prius, but haven't been able to properly hook up the reverse camera trigger. There are a bunch of threads here that helped me locate the correct wire in the drivers foot area. I used a T-Tap and I'm sure it's all connected correctly because I turn the car on and check the voltage from the back of the T-Tap and it's 0. I shift into reverse and I get ~13V. Shift to Neutral and get 0V. The problem is when I shift into reverse, the stereo doesn't switch to the camera and more importantly, I get the yellow exclamation point on the dashboard along with a solid beeeeeeeeep until I turn the car off. If I disconnect the reverse wire, the car starts up and everything is fine when I shift into reverse. What's going on?

    Thanks a bunch!

    Jonathan
     

    Attached Files:

    #1 jonathanrn, Mar 1, 2018
  2. jonathanrn

    jonathanrn New Member

    Joined:
    Jul 28, 2017
    3
    3
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    Location:
    SF Bay Area
    Vehicle:
    2011 Prius
    Model:
    II
    Solved! There's an option on the headunit to enable the camera to trigger when put in reverse. Duh! Works great now!
     
    #2 jonathanrn, Mar 9, 2018
    MSF1344 and frodoz737 like this.
  3. 3prongpaul

    3prongpaul Hybrid Shop Owner, worked on 100's of Prius's

    Joined:
    Jul 18, 2010
    954
    716
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    Location:
    Boulder Hybids, Boulder, CO
    Vehicle:
    2006 Prius
    Model:
    N/A
    Thanks jonathanrn your info saved me time looking up the wiring diagram. Here's a clearer photo I took to help the next person looking for a "reverse trigger" on a 2012 (or similar) Prius. The red wire has +12V whenever the car is in reverse. It is in the middle row of wire on the large connector and located behind the drivers kick panel.
     

    Attached Files:

    #3 3prongpaul, Apr 26, 2019
  4. MSF1344

    MSF1344 Junior Member

    Joined:
    Oct 27, 2019
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    Location:
    UK
    Vehicle:
    2013 Prius
    Model:
    Active
    Thank you . you saved my time and money . My camera is alive now .

    Thank you man , my camera is working with your solution .
     
    #4 MSF1344, Jan 16, 2020
    Last edited by a moderator: Jan 19, 2020
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