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Jeep Compass Ignition M2-ATX

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  • Jeep Compass Ignition M2-ATX

    I took apart the jeep compass HU and got all the wires figured out except the ignition power.
    There are 2 + from the battery and 2 grounds, but no + igntion cables. I tested the + with a voltmeter to be sure.
    For the M2-atx, how would that work?

    --- + battery
    --- + ignition
    --- ground
    ?
    and for the amp, would the power remote (12V or something) plug into the m2-atx board? (for that anti-thump)

  • #2
    Tap into any line that is switched by the ignition.
    Likely sources are the headunit wiring harness and a cigarette lighter (assuming it's only functional when the car is on)

    I can't help you with the remote amp wire. It should say something about that in the manual, though.
    Have you looked in the FAQ yet?
    How about the Wiki?



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    • #3
      could I safely run the amp, computer and whatever is plugged into the cigarette outlet all on 1 wire from the cigarette outlet?

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      • #4
        No.

        The cigarette lighter was a suggestion for the ACC line that the M2ATX requires to trigger startup/shutdown of the PC. The M2 simply senses voltage on this line, so the amount of power draw is negligible.

        The circuit for a cigarette lighter is not designed to provide current sufficient to power an amplifier or PC.
        You're going to want to run a power line directly to the battery to power these. Considering the setup you're looking at, I'd suggest a power line of 4awg (or lower, depending on the anticipated draw) going to a fused distribution block, with thinner wire going to the amplifier(s) and PC.

        My setup is similar to this. I have two modest amplifiers and the PC (dead, as of now). One 4awg power line running straight from the battery to a distribution block that handles both power and ground lines.
        Have you looked in the FAQ yet?
        How about the Wiki?



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        • #5
          Err I mistyped it.
          Is the cigarette outlet enough for the m2-atx ignition switch? I have a dedicated power running for the battery +. I did get it to run today.
          Also I was able to wire up the remote amp switch to the m2-atx remote amp jumper

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          • #6
            Originally posted by plunderisley View Post
            Err I mistyped it.
            Is the cigarette outlet enough for the m2-atx ignition switch? I have a dedicated power running for the battery +. I did get it to run today.
            Also I was able to wire up the remote amp switch to the m2-atx remote amp jumper
            yes, the cigarette lighter is enough for the ignition switch. IF you have any question, nmeasure the output on it with a multimeter to make sure it goes to +12v with the ignition on and 0v with the ignition off.

            The ACC line that is required by shutdown controllers is just used for sensing voltage, nothing more. AS I said, the power draw on that line is negligible.
            Have you looked in the FAQ yet?
            How about the Wiki?



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            • #7
              Originally posted by DarquePervert View Post
              yes, the cigarette lighter is enough for the ignition switch. IF you have any question, nmeasure the output on it with a multimeter to make sure it goes to +12v with the ignition on and 0v with the ignition off.

              The ACC line that is required by shutdown controllers is just used for sensing voltage, nothing more. AS I said, the power draw on that line is negligible.
              Good.
              Exactly what I wanted to hear.

              Now to get some sleep and work on finishing my setup today.

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              • #8
                if that jeep compass is anything like my jeep it has one lighter that is always on and one that is only on when the ignition is on. I used this for my turn on lead and it works great. I did not have to go hunting for wires :P

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