Installing a Gentex auto-dimming mirror with HomeLink into a '16 Civic

  1. Iilac

    Iilac Spelled with a I not a L for Iilac.

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    Just to clarify, would this exact connection for the two harnesses still work?
     
  2. tk_chatt

    tk_chatt Member

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    #107 tk_chatt, Dec 29, 2018
    Last edited: Dec 29, 2018
    Lilac,
    Do you have a picture of your Gentex mirror connector ( wire side )?
     
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  3. Iilac

    Iilac Spelled with a I not a L for Iilac.

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    Sorry for the delay response. Here is a picture of the pigtail I got with my Gentex.

    IMG_20190223_220108.jpg

    IMG_20190223_221212.jpg
     
  4. Deepak J

    Deepak J Senior Member

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    do you have temp and compass built in?
     
  5. tk_chatt

    tk_chatt Member

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    #110 tk_chatt, Feb 24, 2019
    Last edited: Feb 24, 2019
    Hi lilac,
    In your harness the Black wire will be ground. The Black wire with the Red stripe will be +12 volts constant (BATTERY), and the Yellow wire is +12 volts switched (IGNITION).

    Some people opt to connect both 12 volt wires to the IGNITION source. This gives the extra security of needing the key to operate the Homelink. That would be your option.

    The Brown & Blue wires are unusual, but they were a feed to a dimming side view mirror and do not need to be connected. You should insulate them ( tape them off ) somewhere in your harness.

    Hope this helps.
     
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  6. Deepak J

    Deepak J Senior Member

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    One of the 2 wires is reverse brown or blue, what happens is that in reverse it turns off the auto dimming
     
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  7. Iilac

    Iilac Spelled with a I not a L for Iilac.

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    The mirror has homelink/auto dimmer/compass. There is no temp.
     
  8. Iilac

    Iilac Spelled with a I not a L for Iilac.

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    Thank you guys! So in my case, to clarify

    I connect the black wire to #6,
    I connect the yellow wire to #7
    I would like the homelink to be usable without the need for a key, where can I connect the black/red stripe wire to?

    Also I can connect the brown or blue wire to #5 to see which one works to turn off reverse auto dimming?

    111.jpg
     
  9. tk_chatt

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    The reverse override wire would be pin 7 ( right next to the yellow wire in your Gentex harness, lilac ).
    I don't see a wire in that position in the picture of your harness.

    As for the unswitched power for the Homelink, I found a constant 12 volts in the overhead map lights and spliced into that circuit.
    I have a 2016 Touring model, and that wire was a red wire in the connector plugged into the map lights.
     
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  10. Iilac

    Iilac Spelled with a I not a L for Iilac.

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    Thanks!


    Also on the stock harness, is

    the Teal wire # 5?
    the black wire # 6?
    the white wire # 7?

    111.jpg
     
  11. Deepak J

    Deepak J Senior Member

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    Look into the pins on the connector the white would be in the 5th spot as the first four are empty, black in 6th and teal in 7th pin
     
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  12. tk_chatt

    tk_chatt Member

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    The other around.. the light green (teal) is number 7
     
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  13. nickjohn35

    nickjohn35 Senior Member

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    #118 nickjohn35, Apr 23, 2019
    Last edited: Apr 23, 2019
    Hate to be the one to revive this thread but I am in need of some serious help ASAP. I purchased a Gentex 453 autodim without compass/temp. I connected the 4 wires to the Honda wire harness. (I’ll post a picture with how I connected). I plugged everything in and the mirror has no power and no autodim. Only thing that lights up are the Homelink buttons. To make matters even worse now my car won’t start. Won’t even turn over. I’ve disconnected the battery and let it sit for a while and tried again to only fail again. I checked the codes and it’s giving me a “P0102 Mass or Air Flow Sensor A Circuit Low” and “P0560 system voltage”.

    1AFDC053-B752-4EA5-AA85-40984250BDF0.jpeg
     
  14. vikz99

    vikz99 Senior Member

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    Have you tried switching red and orange wires?
     
  15. nickjohn35

    nickjohn35 Senior Member

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    I will definitely try that. However, but not sure why I can’t get my car to start....
     
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