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[HELP] Android head unit backup camera

Discussion in 'Gen 3 Prius Accessories and Modifications' started by BigBear2010, Oct 28, 2016.

  1. BigBear2010

    BigBear2010 Member

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    I bought this head unit not too long ago. Everything works fine, but the only problem I have is the backup camera screen does not automatic switch up (my camera cable plug in Reserve wire). I did recheck everything, but still have the problem. When I plug in the camera cable to AV-IN, I can see whatever from behind the car, but I have to click on the AV-IN icon every single time I want to use. It is really annoying. Any idea how to fix it?

    *Edit: there is a reserve wire from the back of the head unit with label "reserve wire". I did not use this wire. Do I suppose to use this wire ?
    Thanks
     
    #1 BigBear2010, Oct 28, 2016
    Last edited: Oct 28, 2016
  2. Dylan Doxey

    Dylan Doxey Senior Member

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    This diagram saved me when I was trying to figure this stuff out.

    [​IMG]

    See "REV" on pin 2? That's where you stick the "reverse wire".
     
    #2 Dylan Doxey, Oct 28, 2016
    Daigi_ likes this.
  3. BigBear2010

    BigBear2010 Member

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    So i must connect the reverse wire to power the camera in order for it to automatic switch ?
     
    #3 BigBear2010, Oct 28, 2016
  4. Dylan Doxey

    Dylan Doxey Senior Member

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    This diagram represents the connector interface that Toyota provides. You need to make the "reverse" signal wire from your head unit connect to the "rev" signal that Toyota provides.

    Here is a connector that probably resembles the one that comes out of the back of your head unit.

    [​IMG]

    You need to arrange for the head unit reverse wire to meet up with pin 2 of the Toyota connector.
     
    #4 Dylan Doxey, Oct 28, 2016
    Daigi_ likes this.
  5. BigBear2010

    BigBear2010 Member

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    I contacted the seller, he sent me a picture of wiring connection (please look at the attachment file). I tried to do it, but it seems the camera does not get any power from the reverse wire coming from the back of the head unit.

    I tried to use the diagram above, but I am not sure it is for 2010 prius, since my wiring harness like this:
    [​IMG]
    Mine only has 20 pins, while the diagram above has 28 pins
     

    Attached Files:

    #5 BigBear2010, Oct 29, 2016
  6. Dylan Doxey

    Dylan Doxey Senior Member

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    The stereo connectors had some variation from 2013 to 2014, which forced me to get creative. I've shared my experience. But it looks like your 2010 is a little different still.

    If you're not aware of it, the authoritative source for information on Toyota electrical is techinfo.toyota.com. It costs a few bucks to set up an account and get two days of access. I've done it before for other reasons.
     
    #6 Dylan Doxey, Oct 30, 2016
    BigBear2010 likes this.
  7. Air0ne

    Air0ne Junior Member

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    Hi Guys,

    I have too an android unit. I'm trying to connect an aftermarket camera (sold by the same seller of my android unit) and was wondering how to do it properly.

    I got a wire coming from my android labeled REV-IN
    I got a red wire coming from the yellow RCA of my aftermarket camera

    In the picture above, it says to connect these 2... but do we need after to connect both of them to the pin 2?

    Thx a lot
     

    Attached Files:

    • 01.jpg
      01.jpg
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    #7 Air0ne, Jul 24, 2017
  8. Werwooolf

    Werwooolf Junior Member

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    Hi BigBear2010,
    were you able to find the solution? I have exactly the same problem - can get reverse video when connected to AV-IN, but nothing when using "cam in" connection. Also have a spare "rev-in" cable not connected to anything. I have the unit with canbus box, so most of harness is different from the regular set-ups.
     
    #8 Werwooolf, Nov 12, 2019
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