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How to connect center console AUX to new head unit

Discussion in 'Gen 3 Prius Audio and Electronics' started by yam, Sep 20, 2010.

  1. yam

    yam Junior Member

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    I had a new head unit installed in my Prius II last weekend. My installer was unable to connect the center console AUX input to the rear AUX on the head unit because the center console AUX cable did not have a standard 3.5mm connector. Apparently it uses a proprietary 4-pin connector. My installer was reluctant to splice the cable without a schematic. Anyone have experience connecting an aftermarket unit with rear-panel AUX to the center console AUX cable?
     
    #1 yam, Sep 20, 2010
  2. rrolff

    rrolff Prius Surgeon

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    You, Sir Lam, have a great question that I have not seen answered...

    Clearly, one of the wiring harnesses has the pins, I haven't yet seen (with pics) which pins to connect to...

    Good Topic!
     
    #2 rrolff, Sep 20, 2010
  3. Downrange

    Downrange Active Member

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    I might be missing something, but in my Prius the center console aux jack takes standard stereo mini-plugs.
    If it's some kind of proprietary 4-pin connector, it apparently also accepts regular plugs, and works well.
    What am I missing?
    Edit: never mind, I understand now.
     
    #3 Downrange, Sep 21, 2010
  4. yam

    yam Junior Member

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    Come on guys, 194 pageviews and no one has run into this problem before? Speak up! Surely I'm not the first to want to hook up the center console AUX to a new head unit.
     
    #4 yam, Sep 21, 2010
  5. spiderman

    spiderman wretched

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    I was going to try to figure it out (with a meter) which pins they were. But my new HU came with a USB connector so I didn't. Mini-stereo jack is so 80s. ;)
     
    #5 spiderman, Sep 21, 2010
  6. jayvee

    jayvee Member

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    Here you go -

    The only confusing thing is the AUXI input into the radio. I believe that this is a line that is grounded (within the jack itself) by inserting a plug into the AUX jack. This tells the Radio/NAV that an AUX device has been connected.
     

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    #6 jayvee, Sep 22, 2010
    putty and yam like this.
  7. AnailizeR

    AnailizeR Junior Member

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    Not sure if you are still looking for the pin information; but here it goes.

    on the back of the radio unit you will see a 20-pin connector
    on that connector you want to plug your aux-plug to the following pins:

    [​IMG]

    after that loop pin 19 & 16 (connect them to each other with another wire) and that should give you power to your aux.

    Good luck if this helps that is.
     
    #7 AnailizeR, Nov 16, 2010
    Adric, putty and rrolff like this.
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