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Thread: First Carputer Install - Power/Grounding Questions

  1. #1
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    First Carputer Install - Power/Grounding Questions

    My setup is the following:

    Audio
    -Infinity 7541a Reference Series 111w RMS 4 Channel at 4ohms
    -Infinity Kappa Perfect6.1 Components 100wRMS 4ohms
    -Infinity Kappa 6x9mids 110w RMS 2ohms
    (will running the mids at 2ohms and components at 4ohms be a problem?)

    Carputer
    -Carnetix P-2140 185w PSU
    (w/ PV5 add-on for usb hub)
    -Intel MacMini
    -Lilliput 7inch Touch Screen

    My questions are:

    -I have a 4guage wire with dual 100wfuses (this unit)

    (within 12inches of batt) running to a distro block that will feed the PSU and Amp. Is that fuse box sufficient enough?

    Alternative Idea:
    -Can I use the stock radio harness which contains 12v power, ignition,
    and ground wires to connect to my P1240 or should i run it off the distro
    block for power?

    Thanks

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
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    Do yourself a favor.
    Wire the PSU to the battery, not the harness for the headunit.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  3. #3
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    grazi-

    any ideas on if the fuse amperage is sufficient enough to cover both the audio system and carputer? Thanks

  4. #4
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    also what is everyones experience with grounding kits and carputer intsalls. I figure that by installing a grounding kit will give good clean quieter signals to the carputer.

    If so are there any grounding kits you can suggest? Im driving a 1994 Acura Legend GS Sedan.


    THANKS!

  5. #5
    Maximum Bitrate david69leonard's Avatar
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    You can use the ignition wire from your HU, but that would be the only one that i would use. I would recommend connecting the the constant power wire to the battery a fuse and a distro-block and use a different grounding point other than the one your HU uses, that would help out alot when it comes to eliminating unwanted noises, just make sure it is a good clean ground. i had mine hooked up to the HU wire harness for over a year but after reevaluating the set-up i concluded it could cause alot of problems.

  6. #6
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    bump.........does anyone have any input to offer on the grounding kits??? thanks

  7. #7
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    Actually the fuse is related to the wire's gauge, in your case 4 gauge should have a 150 A fuse. The amplifier and the carputer are protected by their own fuses. The fuse on the 4 gauge wire protects the wire itself. In case of an accident or short circuit the power gets cut near the battery and the 4 gauge wire can not ignite the car.

  8. #8
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    oh, that is good to know. thank you

  9. #9
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    oh, that is good to know. thank you

  10. #10
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    you should have one 4 gauge wire connected to the battery, passing trough the firewall with a grommet than going into a distribution block. The amp and the carpc are connected to the distribution block. If you have the carpc near the amp, use another distribution block to connect both grounds into a common grounding point. If the amp is in the trunk and the carpc under the chair or in the dash, use 2 grounding points. Make sure you use a wire brush and clear the paint for the grounding point for a better contact. If you have more questions please feel free to pm me.

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