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OPUS ATX/M4-ATX - ignition on/off detection if attached to secondary battery?

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  • OPUS ATX/M4-ATX - ignition on/off detection if attached to secondary battery?

    I have a Kinetik HC1400 as my starter battery and a HC800 in the trunk. The two batteries are separated by an isolator.

    If I choose to attach my PSU to the secondary battery in the trunk, will the PSU not operate according to whether the ignition is turned on/off?

    Is there a way around this, or am I just going to have to hook this up to my starter battery?

    Thanks
    2003 Mitsubishi Lancer CarPC Build Thread

  • #2
    the ignition position is a key-position, not a battery location.

    so no matter which battery you connect the main power for the psu to, it is the status of +12v on the 'acc/ign' line that determines when the psu shuts down.
    My OLD 2001 Mitsubishi Eclipse GT:
    "The Project That Never Ended, until it did"


    next project? subaru brz
    carpc undecided

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    • #3
      does the PSU connect somewhere to this line for it to be able to sense the key-position?
      2003 Mitsubishi Lancer CarPC Build Thread

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      • #4
        Yes, every intelligent power supply has a wire that connects to your ign wire.
        1999 Mercury Grand Marquis GS with: ASRock E350M1 w/4GB RAM, 80GB Intel SSD, Opus DCX3.120, Visteon HD Radio + HDR-USB, PL-18N wifi, OBDLink Scan Tool, BTA6210 BT, BU-353, Win 7 Ultimate, CF 4.0, Alpine MRP-F240 + MRP-T220, RF Punch 1572s, Kicker 8" Comp.

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        • #5
          Originally posted by kegobeer View Post
          Yes, every intelligent power supply has a wire that connects to your ign wire.
          sorry to be a bother, but how can i locate this wire...am i having to solder the PSU connector wire onto this somehow, or do most cars come with a plug of sorts i connect to wire to? is there a tutorial or explanation on how to do this properly/safely? it seems like a risky thing to be toying with if you don't know what you're doing....
          2003 Mitsubishi Lancer CarPC Build Thread

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          • #6
            Search for a wiring harness diagram for your ride: http://www.the12volt.com

            And you don't need the actual ignition wire. Any ignition-controlled line will work. I use the line from a cigarette lighter power, since those are ignition-controlled in my vehicle. You may also have ignition-controlled lines in you fuse box with nothing on them. Add a fuse and use that.
            Have you looked in the FAQ yet?
            How about the Wiki?



            Under normal circumstances, a signature would go here.

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            • #7
              Originally posted by DarquePervert View Post
              Search for a wiring harness diagram for your ride: http://www.the12volt.com

              And you don't need the actual ignition wire. Any ignition-controlled line will work. I use the line from a cigarette lighter power, since those are ignition-controlled in my vehicle. You may also have ignition-controlled lines in you fuse box with nothing on them. Add a fuse and use that.
              thank you!
              2003 Mitsubishi Lancer CarPC Build Thread

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