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Thread: Car Wiring Overview

  1. #1
    Low Bitrate savante's Avatar
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    Car Wiring Overview

    Hi guys,
    I am trying to get all my wiring planned so I dont forget anything.
    I have tried to think long and hard about it and I have come up with the diagram attached.

    I am hoping you guys could offer some critique, criticism or pointers... whatever feedback would be welcome(other than about my lame artistic skills).
    I just hope I didn't forget anything.
    Thanks for your time.
    Attached Images Attached Images  

  2. #2
    Maximum Bitrate SAScooby's Avatar
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    dont think your 15a fuse will cut it
    Nano ITX / 512 MB / 60 GB / Panasonic slot load / M1-ATX / Bu303 / Sound blaster 24 / PPi amps / rockford sub

  3. #3
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    Looks pretty good but why are you using a hub for the DVD? Connect it directly to the board's USB 2.0 out... unless you need more ports for future upgrades. Also, as mentioned, you may need a bigger fuse.

    Also, ground your battery :P

  4. #4
    Maximum Bitrate binary.h4x's Avatar
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    Are you using two USB hubs because of location?
    2007 Honda Fit Sport 1.5L SOHC-VTEC

  5. #5
    Low Bitrate savante's Avatar
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    First off, thanks for the replies.
    Quote Originally Posted by SAScooby
    dont think your 15a fuse will cut it
    Everywhere I looked, I saw that people recommend a 15A fuse for a 150W Opus. What fuse should I use?

    Quote Originally Posted by Bobby Digital
    Looks pretty good but why are you using a hub for the DVD? Connect it directly to the board's USB 2.0 out... unless you need more ports for future upgrades. Also, as mentioned, you may need a bigger fuse.
    I am using a HUB for two reasons, in case I decide to hook my iPod up for file transfer or for hooking up other future devices. And, as binary.h4x said, because of location.... the hubs and DVD will be in the glove box, the computer will be in the trunk.
    Thanks for the replies guys.

  6. #6
    FLAC Chairboy's Avatar
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    Instead of using the audio out on the iPod, why not put a firewire connection to your computer? That way you can treat it as a storage device and play music directly off it using your computer.

    Also, consider putting a switch on the accessory line so you can choose to not start the computer. I have that on mine and I find it handy when I'm just moving the car to get into my garage and other little stuff like that.

    Looks good! Great planning, it should help you save time (I know I would have saved a lot of time if I had bothered to plan this out. whoops)

  7. #7
    Low Bitrate savante's Avatar
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    Quote Originally Posted by Chairboy
    Instead of using the audio out on the iPod, why not put a firewire connection to your computer? That way you can treat it as a storage device and play music directly off it using your computer.
    I thought about this issue, and I keep tossing it back and forth. I think thats a good reason to keep the usb hub there, or even get a firewire+usb combo hub.
    My thought right now is this:
    The ipod is currently connected to monster icarcharge which has a dock connector and gives power while supplying a digital audio out. That audio is currently connected to my radio, and I have gotten used to using the remote on the iPod to change songs.... So that is why I planned it this way. Then whatever frontend software I use will just have to integrate well for navigation.
    Of course my preference could change very quickly once this is installed and running which is why I thought it would be good to have a hub in the glovebox specifically for USB 2.0 devices or possibly a combo hub USB2.0+FIREWIRE400
    Quote Originally Posted by Chairboy
    Also, consider putting a switch on the accessory line so you can choose to not start the computer. I have that on mine and I find it handy when I'm just moving the car to get into my garage and other little stuff like that.
    That sounds like a good idea, Ill look into that. I also am thinking about how to 'gracefully' include a reset switch somewhere on the console so that I dont have to stop and restart the car if there is a lock up.
    Thanks for the reply.

  8. #8
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    Looks good. Same basic idea as my setup, but your power supply is much neater. I use an inverter and an auxiliary battery for a UPS (and to keep the computer running when the car is parked). One advantage of this is that it allows me to use the carputer over VNC and filesharing without having to worry about it killing the main battery.

    Here's my block diagram for clarification.
    Attached Images Attached Images  

  9. #9
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    Am i right in thinking that your Aux battery is linked to your main in paralel?
    And all you do is disconect the pos side of the battery between them isolating the 2.

    In my experiance this can be bad for the Aux battery (especualy Gel ones) that are not desigend for that kind of use.

    What you should be using is a Deep cycle battery (marine, camping).
    These suckers are designd to be constantly drianed and charged withought damaging the electric plates inside.

    Where as your gelly battery can only take ~ 1-2A at regulated 13v to charge a deepcycle battery can take around 18-20V @ 10-70A

    Your average car alternator can kick out around 30-70A 13-18v depending on rpm. Pumping this through your Gell mattery is not good and you will degrade its performance considurably.

    Just my thought
    Tom

  10. #10
    Rub One Out Motoko's Avatar
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    5A on the 7" LCD? to big, won't do nothing
    CarPC status: iPod, 3,456,217 songs so **** you

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