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OBIHL4 Homelink Dimming Mirror for 2017 Prius 2

Discussion in 'Gen 4 Prius Main Forum' started by LamPrius, Aug 18, 2021.

  1. LamPrius

    LamPrius Junior Member

    Joined:
    Oct 31, 2007
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    Just got a used OBIHL4 Homelink Mirror for 2017 Prius 2.
    It have 10 pins in a dual row of 5

    The wire pin out as follow:

    1 Switch12+ for Diming function
    2 GND for Pin 1
    3 Not used
    4 Not used
    5 GND for Homelink function
    6 12+ ON for Homelink function.

    Dim function consump approximately 250mA max and steady at 140mA

    Homelink consump a pulse of 50mA

    Next step determine power from overhead console of the Prius.

    if any need to know how to remove the overhead console, let me know.
     
    #1 LamPrius, Aug 18, 2021
    Storming777 likes this.
  2. hill

    hill High Fiber Member

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    Jun 23, 2005
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    Location:
    Montana & Nashville, TN
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    By power, do you mean voltage?
    .
     
    #2 hill, Aug 18, 2021
  3. Colorado Boo

    Colorado Boo Active Member

    Joined:
    Jun 23, 2021
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    Location:
    Monument, Colorado USA
    Vehicle:
    2021 Prius
    Model:
    LE AWD-e
    The plastic box attached to the windshield that also has the mirror just snaps off...you gently squeeze and pull down on the bottom piece and you may have to also pull up a little on the top piece...it's a little unnerving how easy it comes apart! I saw good access to wires in there so splicing in for power and ground shouldn't be hard.
    I've been looking at replacing the rearview mirrors on both our Prius' with the Gentex Auto Dimming which is only $67 on Amazon.
     
    #3 Colorado Boo, Aug 18, 2021
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