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  • Wiring Diagram

    Hi all, just thought I'd post my planned wiring diagram. The m2ATX is in the boot, there is a single piece of 7 core running down the drivers side of the car.

    I want to completely attach the 7" screen's 4 wires to the M2-ATX. So that if i remove the whole system from my car to fit in another one I only need to wire in 3 wires for the M2-ATX. The screen will then still be wired in to the m2 ATX in the PC - Nice and simple.




    cheers for any help!

  • #2
    Thread moved to proposed setups.

    To answer your question, if you mean that you will wire the screen to the M2's 12v pos output, expecting it to work only when the computer is turned on, the answer is yes. Just make sure you calculate the loads on each rail of the M2 to keep from overloading the 12v rail with the screen.

    Also, I think -12v is the same thing as ground but you should check this with a multimeter.
    Originally posted by ghettocruzer
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

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    • #3
      You should verify that your screen needs -12v, the m2 does indeed put out -12 volts with respect to ground, but that seems VERY odd that the screen would require -12volts.
      "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
      RevFE
      My Shop

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      • #4
        My screen needs 4 inputs:

        * Earth
        * +12
        * -12
        * Ignition

        What I'm asking is: For the 'ignition' can I just use the same +12v feed from the M2 ATX as I use on the +12v input?

        Are you saying I won't need to wire in a -12v?

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        • #5
          hang on just a sec i'll take a picture of the wiring diagram I've been given...

          Comment


          • #6
            Originally posted by MichaelPlace View Post
            My screen needs 4 inputs:

            * Earth
            * +12
            * -12
            * Ignition

            What I'm asking is: For the 'ignition' can I just use the same +12v feed from the M2 ATX as I use on the +12v input?

            Are you saying I won't need to wire in a -12v?
            If it uses ignition to know when to turn the screen on, yes you can use the +12v feed from the M2ATX.

            I'm not saying you won't need a -12V, I just said it's very odd that a screen would require that, cars do not usually have -12v (with respect to ground), so by that logic there is NO way to hook this screen up without an ATX power supply of some sort.

            That's just odd, do you have a datasheet for your screen we can look at? I'm willing to bet it's expecting ground for that instead of -12v. Bad documentation perhaps.
            "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
            RevFE
            My Shop

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            • #7
              oh you guys are brilliant, it's my mistake, it is two x grounds not a -12v

              this is the connector:




              is there a difference between the green wire ground and the black wire ground?

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              • #8
                Originally posted by MichaelPlace View Post
                oh you guys are brilliant, it's my mistake, it is two x grounds not a -12v


                Whew! That could have been a bad mistake. plugging the -12V into a ground would provide the screen with 24 volts potential, and probably blow more than just the power supply. Glad you got it sorted out
                "stop with the REINSTALLS, what do you think we got some lame-o installer!!!" - mitchjs
                RevFE
                My Shop

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                • #9
                  It's going to be my brother who wires the thing in (5 years experience at an auto electricians!) so he would have put me right. I just wanted to make sure I understood what was going on!

                  Cheers,

                  next question - Do i need to add any other Fuse on this system, there is one on the input to the screen - as you can see. Do I need to fuse the input to the M2-ATX?

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                  • #10
                    You always want to fuse the line within 18 in of the battery. Even less is better. the M2-atx will have a 15 amp fuse built in.
                    Lilliput EBY701, M2-ATX, Intel 1.8 GHz, 1GB Ram, 160 GB 2.5 hard drive, Centrafuse, Garmin Mobile PC, GlobalSat BU-353.
                    My 2000 Saturn SL2 Worklog

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                    • #11
                      Probably obvious next question, what type of fuse should I buy? Any links would be gratefully received

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