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Auto Dim Mirror

Discussion in 'Prius v Accessories and Modifications' started by ATXPrius, Mar 24, 2016.

  1. ATXPrius

    ATXPrius Junior Member

    Joined:
    Mar 24, 2016
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    Location:
    Austin
    Vehicle:
    2013 Prius
    Model:
    Two
    First Post,

    Just bought a 2013 Prius 2 and wanted to install an Auto Dim Mirror. Ive always been a Subaru driver and they have the harness already wired in to the headliner if you want to put one in. Does anyone know if my Prius will have the harness already wired or do you have to install that?

    Thanks!!
     
    #1 ATXPrius, Mar 24, 2016
  2. rjparker

    rjparker Tu Humilde Sirviente

    Joined:
    Jun 6, 2008
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    Location:
    Texas Hill Country
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    The "homelink" autodim mirror requires a switched 12v that the Prius v's without the mirror don't have wired in. Usually people have added that wire under the headliner down the driver's side post to the fuse box. There are posts available with details.

    I wanted the Homelink garage / gate door opener function and ended up with the autodimming in addition. I took an easier route, I just wired it up to the constant 12v that is available for the map lights. I know, it's Prius 12v blasphemy to leave a 6 ma constant draw on when parked, which is primarily the mirror's LED as measured. I use the mirror's on/off button for extended parking like airports. By the way, the Homelink function works with the switched power off even when factory installed.

    The attached is a compiled document including pics from several other sources along with my drawings and mashups.
     

    Attached Files:

    #2 rjparker, Mar 24, 2016
    Last edited: Mar 24, 2016
    TheTewks, redcoral and SnoozinJTD like this.
  3. Air_Boss

    Air_Boss Senior Member

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    Location:
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    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    Nice to know there is a switched 12V source up there... Thanks for the write-up.
     
    #3 Air_Boss, Mar 25, 2016
  4. rjparker

    rjparker Tu Humilde Sirviente

    Joined:
    Jun 6, 2008
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    Location:
    Texas Hill Country
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Actually there is not a switched 12v up there unless the autodimming mirror came from the factory. There is a connector pin for it. Maybe you already have one on 2012 model 5 but a 2013 model 2 probably does not.
     
    #4 rjparker, Mar 25, 2016
  5. Air_Boss

    Air_Boss Senior Member

    Joined:
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    Location:
    New Yawk
    Vehicle:
    2012 Prius v wagon
    Model:
    Five
    Yes, the 2012 v Five has the auto-dimming/HomeLink mirror.
     
    #5 Air_Boss, Mar 25, 2016
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