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Thread: Help with USB Hub power issue

  1. #11
    Variable Bitrate StrataG's Avatar
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    A diode would help, not sure about the one in question though. You should not need one though if you are wiring it up correctly. You never answered my question as to where the power source is coming from for the POL. If you could answer that, it would make helping you easier.

  2. #12
    Newbie millc5's Avatar
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    The POL is getting its power from 12v constant source at the fuse panel, but is triggered by ACC.

    I have it wired input as

    CAR OPUS POL
    +12v --> B+
    GND --> GND
    ACC --> I/O

    This is the POL:
    http://www.mp3car.com/store/product_...roducts_id=138

  3. #13
    Variable Bitrate StrataG's Avatar
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    It appears you have it wired up correctly if the tap from the fuse box is indeed a constant source. Triple check your connections on the POL however as it could be possible that you have the power and remote lines swapped. The accessory line should not be carrying anything in the opposite direction. This is why I think you may have the acc and power lines swapped on the input to the POL.

    As far as the diode, that would solve the problem with a band-aid. It would obviously work, but the question is why is the current backing down the wire.

    Also be sure to check that you have set your bios not to keep the +5V alive when the system is powered off (if you have that option).

  4. #14
    Newbie millc5's Avatar
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    Thanks, I will double check the inputs.

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