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Thread: 2004 Accord navigation with carPC

  1. #1
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    2004 Accord navigation with carPC

    This is my first post and my first carPC.

    What I am trying to do is add a carPC to my Honda navigation sysem. I know it's possible but I would like some advice on the long painful process of doing this. So far I think I got it figured out.

    1) Check the connection to the lcd/touchscreen.
    2) Find the pin config. for it. (video signals / touch screen data)
    3) Create a 3way type of switch to change from carPC to Nav.
    4) Put it all together.

    If possible I would prefer to change the screen with a liliput but keep it recessed in the dash with all my nav functions still working properly. Why keep the nav and not just put a nav on the carPC? Because the nav controls the A/C and CD changer and some radio functions.

    Any suggestions would greatly be appreciated. THANKS!!

  2. #2
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    I find taht it things arent and long and painful if u read up about it and enjoy what your are doing.

  3. #3
    Newbie ashtray360's Avatar
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    Did you ever complete this project?

    I'm just getting started studying CarPC installations in Honda Accord's with Navis. Definitely want to do it, but haven't found anyone else who has. I've seen folks with Acura TL's (which is a higher end Honda) do it successfully, but unfortunately, ours is too different. I know becuase I'm currently looking at the disassembled NAVI from my car. Sooo many pieces. whoo hoo!

  4. #4
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    Talking I'm back at it

    Hey ashtray. I just got back to work on my carPc. So far I have the PC part done, lacking a front end. Now to get it in the car. I am trying to do the same as I saw an acura tl with 2 relays to switch between stock nav and my car pc. I don't like the way scan converter pictures look. Kind of fuzzy, not as sharp as I want it. I think my choice is going to be a video card named arcadeVGA. Just waiting for confirmation that it is going to work. The touch screen part is going to be easy. Even though I haven't done it yet. I have taken the nav screen completely apart to where the t/s is isolated to the 4 wires that feed it. Relays are simple.

    Do you have the same car as mine?

  5. #5
    Newbie ashtray360's Avatar
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    Hey blazer563,
    I have a 2004 Honda Accord EX-L with OEM Navi and XM. The area under my Navi unit has an aftermarket DVD/MP3 player that feeds two monitors behind the headrests currently. I want to incorporate those.

    I'm thinking the Video and the Audio are the easy parts.. the screen controlling the computer is what I think will be hardest. My Car2PC unit just came in and I've seen on their forums several problems with cars that have the NAVI with XM. Hoping mine goes well. Will let you know.

    I don't know if you've taken apart the Navi unit, but we don't have the same 4 wire ribbon hanging off the display. We've got like one gigundo 30 pin ribbon cable coming off of it and I'm not sure which wires are used for controlling the screen. I've got the same model as the one below (although most of these images are from the TL forum and not my actual unit):





    Questions are:
    - Do you have the same unit?
    - Is this a four wire analog resistive touch panel?
    - If so, which four wires do we need to tap into.
    - Will we be able to put a relay in the middle?

    In any case, I'm glad to have someone doing this along side me to commiserate/celebrate with.
    I'll keep you posted.

  6. #6
    Newbie ashtray360's Avatar
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    Installed my Car2PC adapter tonight..

    The Car2PC unit from indashpc.com is in. I had to use the y cable they sell so I could plug in their unit AND my OEM XM unit. The audio from the PC sounds superb, but now XM sounds really yucky. Unplugging the Car2PC unit returns it to its full glory so I know its not the Y adapter. Also, I couldn't control my playlists via the HU. I've sent an email to their support.

    I bought a Scan Do 800 off eBay for $28 to send video from my PC to the Navi screen and created a USB power supply for it. This will convert the VGA to RGBs at the necessary 15.7Khz frequency. However, I'm a bit reluctant to cut into the wires in the back of my Navi in my trunk. Hoping I can find someone that has made an adapter or just some plugs that I can make my own with.

    Angrycamel and Met152 are leaders in the area of OEM touchscreen control. Their propellers are much bigger than mine. I just read the Angrycamel thread below and know that you will find it interesting too.
    http://www.acurazine.com/forums/show...9&page=1&pp=25

    Looks like Angrycamel has some plugs for tapping into the Navi too!

  7. #7
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    Hey ashtray I need to catch up!

    As soon as I finish this post I'm gonna hit ebay and look for a scan converter. I believe the 2 white and 2 red wires coming off the screen are the 4 needed to connect to the usb controller. I cannot find anywhere the location of rgb&s wires. The only response I have got is to check the service manual. Which I don't have and really don't wanna buy. So i guess i'm just gonna start cutting wires If you get hold of a service manual please share. I'll post as soon as I get the USB tscontroller or my Scan do.

    BTW yeah I do have the same unit. same car.
    Joe

    2004 Honda Accord V6EX - OEM Navigation plan to integrate CarPC.

  8. #8
    Newbie ashtray360's Avatar
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    Instead of splicing the OEM wires from the Navi in the trunk for the video, I bought a DIY harness from Angrycamel dot com's website. Just click on the Harness link in the right and you'll see an AH20 Connector DIY. You can also have him put it together for you but I'm wanting to put it together myself.. that way I can make sure the pinouts are exactly right for my scanconverter. I'm waiting for that and I've already received my 4PDT relay from Digikey to switch between the two.
    fpena from another forum (http://driveaccord.net/forums/member.php?u=5281) I know has a Scan Do 800 which he had for sale. You can go there and PM him if you want. He just wants what he paid for it.. ~$100.

  9. #9
    Newbie ashtray360's Avatar
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    I think those two white and two red wires are to power the backlight of the lcd panel.. not the four wires for the touchscreen. It would be too easy otherwise. Let me know if you learn different.

    I found the following pinouts posted on the driveaccord.net forums:

    04 back of NAV.pdf
    04 nav connectors.pdf

    The original post this comes from is: http://driveaccord.net/forums/showth...101#post149101

  10. #10
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    Hey Ashtray any luck with the touch screen part? I finally got around to getting a scan converter. It's not a scan do but it has the same specs I think it looks a little cleaner too. What about the ah20 connector from angrycamel? Any chance I could get some close up pics of it? I am going to get my nav system out of my accord tomorrow. I have to leave my car at a shop for a few days. So plenty of time to play with it. I have the 1 of the 2 relays I need.

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