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Thread: Just have wired installed and now have question.

  1. #1
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    Just have wire installed and now have question.

    Hi, I just have a stereo guy to install the power wires to the PSU in the trunk. THe guy asked me where should the Switched line goes to, Ignition or Accessory? Then i looked at the OPUS instruction and answered "Ignition".
    After spending a while read through the posts here, I am getting worry that I might did the wrong thing! Should I have him installed to the Accessory line rather than Ignition? Will my setup still able to power up the computer and off? I don't have an OPUS yet so I can't test it so I am looking forward to hear what the experts say here.

    THanks,

  2. #2
    Constant Bitrate P4_2.66GHz's Avatar
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    Acc is the right one.

  3. #3
    FLAC samc's Avatar
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    drink a yoohoo and relax..
    Mine needs to be updated.

  4. #4
    Maximum Bitrate sfay93's Avatar
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    I like the IGN wire myself. ACC wire would show voltage for a moment before the crank and then again after you crank. I am not sure but I think this would throw 2 seperate momentary pulses to the mobo.

  5. #5
    Raw Wave god_of_cpu's Avatar
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    Doesn't matter, the OPUS will filter out momentary pulses, the power has to be off for a bit before the shutdown signal will be sent.

    Quote Originally Posted by sfay93
    I like the IGN wire myself. ACC wire would show voltage for a moment before the crank and then again after you crank. I am not sure but I think this would throw 2 seperate momentary pulses to the mobo.
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  6. #6
    Maximum Bitrate carpcnoobie's Avatar
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    Quote Originally Posted by sfay93
    I like the IGN wire myself. ACC wire would show voltage for a moment before the crank and then again after you crank. I am not sure but I think this would throw 2 seperate momentary pulses to the mobo.

    This also depends on the arrangement of the ignition key.

    Some keys go..

    ACC -- Only radio and accessories
    LOCK
    OFF
    ON-- Engine running, everythign on
    START


    Some keys go...

    LOCK
    OFF
    ACC
    ON
    START
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  7. #7
    Constant Bitrate P4_2.66GHz's Avatar
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    We might be confusing a thing or two here.

    The way I would interpret wires:
    ACC - On when igintion key is in ACC, ON, Start positions.
    IGN - On when the car is cranking.

  8. #8
    Maximum Bitrate sfay93's Avatar
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    ACC wires do not have power during start/crank. Only in the ON and ACC positions.
    IGN wires have power in the ON position and through crank.

  9. #9
    Constant Bitrate P4_2.66GHz's Avatar
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    Quote Originally Posted by sfay93
    ACC wires do not have power during start/crank. Only in the ON and ACC positions.
    IGN wires have power in the ON position and through crank.
    You're right! I looked it up in the manual. The starter one is called ST, not ignition. The ON one is the IGN.

  10. #10
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    Can't speak for all cars but most japanese cars (Toyota, Honda, Nissan, Madza, )with key arrangement like this:
    LOCK/OFF-ACC-IGN-START
    ACC has power when key in ACC, IGN
    IGN has power when key in IGN, START.
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