Installing 3rd party car alarm, cant find two wires

Discussion in 'Prime Technical Discussion' started by Flagmaster, Jun 2, 2019.

  1. Flagmaster

    Flagmaster Junior Member

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    Vehicle:
    2012 Prius
    Model:
    I
    I'm looking for the wires that go positive when the car doors are closed. These wires are tapped into and diode isolated into the door trigger wire of the alarm.

    I found the blue and brown wires on the 30 pin connector go hot when the door is closed and ground when its opened (negative door trigger).

    I told there is a brown and grey wire for the rear doors on different 36 pin connector, but I can't find them.

    I know the car has a built-in factory alarm, but I'm doing a combo alarm/remote start with fantastic range.

    I know I could use a data-link device to do all this via the CAN bus, but this is a home-brew interface to the car which gives it some very cool features that just can't be done any other way.

    So all I need is the location of those two door trigger wires for the rear doors.

    Thanks much.
     
  2. Flagmaster

    Flagmaster Junior Member

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    Vehicle:
    2012 Prius
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    Oh god, I think I know where they are. They are on connectors to the ECU, but on the back side, holy hell, this is gonna suck.
     
  3. Bill Norton

    Bill Norton Senior Member

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    Location:
    MONW, Ks.
    Vehicle:
    2010 Prius
    Model:
    Five
    You should ask yourself: Who would steal a Prius?
     
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