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Thread: Carputer Start-Up Quest.

  1. #1
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    Question Carputer Start-Up Quest.

    I was told that i could have my carputer start up when I disarm my alarm. This way by the time i get in my car, it will already be booted up. Im not sure what wire to use from the alarm.I would like to also know if i could still use the itps wiring it this way. Here is a pic of my alarm wire diagram, im guessing its going to be the blue wire from my alarm. I just want it to be turned on when i DIS-arm and not arm.

    But not sure, can anyone help?

    Also, i dont see why i wouldnt be able to use the itps wiring it this way. I can wire the switched wire in the itps, to the wire on the alarm. That way instead of the itps being triggered when the car is put in acc, it will be triggered when the alarm is un-armed.......

    Right? Well at least it sounds right... lol

    Thank for your time





  2. #2
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    I think it would nice to have one of the buttons on a remote to turn on the computer..
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  3. #3
    Raw Wave god_of_cpu's Avatar
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    I did this for my car already. http://g35driver.com/forums/showflat...view=&sb=&vc=1

    The major obstacle to overcome with getting this to work, at least for my car, was that when the unlock or lock button was pressed on the keyfob, it would just send a momentary pulse, not change a wire to read a certain voltage when the car was locked, and not otherwise. To get around this I had to construct the relay circuit indicated by my diagram to make the momentary pulse trigger a constant on signal when the car was unlocked.

    For your car, I would think that you could use either the door input triggers or green or blue wire on harness 2. You'll have to hook up a voltmeter though and see what kind of response you get from the wires when you activate the alarm to see if its a momentary pulse or not. If its constant output, it should be real easy, just hook a relay up to trigger your ITPS.
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  4. #4
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    Quote Originally Posted by god_of_cpu
    I did this for my car already. http://g35driver.com/forums/showflat...view=&sb=&vc=1

    The major obstacle to overcome with getting this to work, at least for my car, was that when the unlock or lock button was pressed on the keyfob, it would just send a momentary pulse, not change a wire to read a certain voltage when the car was locked, and not otherwise. To get around this I had to construct the relay circuit indicated by my diagram to make the momentary pulse trigger a constant on signal when the car was unlocked.

    For your car, I would think that you could use either the door input triggers or green or blue wire on harness 2. You'll have to hook up a voltmeter though and see what kind of response you get from the wires when you activate the alarm to see if its a momentary pulse or not. If its constant output, it should be real easy, just hook a relay up to trigger your ITPS.
    I wouldnt think that its a constat since it just triggers the door locks to open or close. Its probally just a momentay pulse. I will look into it.

    What do mean hook up a relay to the itps?

    Thanks.

  5. #5
    Maximum Bitrate cadence117's Avatar
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    god are those connections comming form the car pretty standard?

    i'm dealing with a 2002 impreza
    mobo $130 ; 150wOpus-$200 ; 256mb pc2700 -$10 ; 120gb HDD 7200-$70 ; Lilliput TS 7"-$265 ; USB LAN-Free AR ; Rikaline 6010 GPS-$34 ; ShuttleXpress-$37
    Total = $746....Carputer = Priceless

  6. #6
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    Quote Originally Posted by cadence117
    god are those connections comming form the car pretty standard?

    i'm dealing with a 2002 impreza

    Its off a dei viper alarm. Really doesnt matter what kind of car you have, the alarm wires are mostly the same color code like in a car radio.

  7. #7
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    Quote Originally Posted by god_of_cpu
    I did this for my car already. http://g35driver.com/forums/showflat...view=&sb=&vc=1

    The major obstacle to overcome with getting this to work, at least for my car, was that when the unlock or lock button was pressed on the keyfob, it would just send a momentary pulse, not change a wire to read a certain voltage when the car was locked, and not otherwise. To get around this I had to construct the relay circuit indicated by my diagram to make the momentary pulse trigger a constant on signal when the car was unlocked.

    For your car, I would think that you could use either the door input triggers or green or blue wire on harness 2. You'll have to hook up a voltmeter though and see what kind of response you get from the wires when you activate the alarm to see if its a momentary pulse or not. If its constant output, it should be real easy, just hook a relay up to trigger your ITPS.
    Yea thats so condusing and also thought you could do this with just 2 relays. I just dont know what wire to use and where to put the relays and what wires to hook to the relays.



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