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Anyone here work at a Gm dealership? or wiring gurus

Discussion in 'The Garage' started by neverendingproject, Mar 20, 2006.

  1. neverendingproject

    neverendingproject 1/2 ton status

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    I need wiring schematics for a gentex 177 auto dimming mirror (gntx-177) with compass and temperature.

    Wires are as follows.

    1. redish pink (im pretty sure this is power)
    2. black (pretty sure this is ground)
    3. green
    4. gray
    5. pink
    6. green/black (temp sensor)
    7. brown (temp sensor)

    So I need help with the green gray and pink
     
  2. readymix

    readymix 3/4 ton status

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    Here is the low down on the connections to a Gentex mirror (with comp and temp) cut from a late model GM product. The connector pin numbers are found on the wire incursion side of the mating connector.
    GM wire harness color function
    PIN 1 PINK POWER +12 volts
    PIN 2 BK CHASSIS, GND
    PIN 3 LT GRN BACKUP LIGHTS
    PIN 4 GY TO AUTO DIM OUTSIDE MIRROR
    PIN 5 PINK TO AUTO DIM OUTSIDE MIRROR
    PIN 6 DR GRN/WT TEMP PROBE
    PIN 7 BK/WT TEMP PROBE
    Note: Pin 3 is to be connected to the backup lights to turn off the auto dim feature in reverse. If you intend not to use this feature connect the LT GRN wire to chassis ground. If this pin is floating the auto dim will not work properly. Hope this helps.
     
  3. readymix

    readymix 3/4 ton status

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    Forgot to mention...
    The wire to your reverse lights only serves one purpose...
    When you put the car in reverse it turns the auto dim off.
     
  4. neverendingproject

    neverendingproject 1/2 ton status

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    Thanks readymix
     

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