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Thread: questions re:screen fab- lexus specific

  1. #1
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    questions re:screen fab- lexus specific

    I want to install a mac mini in my 02 is300 sportcross. I spent a good amount of time searching, and now I have more questions than before.
    If i have the OEM navi, can i change/remove my HU and have the nav still work? I read a thread that said your nav stops working if you remove the factory HU. also, has anyone written a tutorial for installing a Xenarc into the JDM dash kit? I've seen tons of pics of installed screens, but no actual tutorials.
    Which is better, moving the heated seat buttons, or modding the JDM kit?
    Is there a shop in the bay area that will do this kind of work? (or at least advise/consult?) I'd like to do it myself, but don't want to screw up the nicest car I've ever owned... My last 2 cars were a 1966 Ranchero and a 1955 Ford F100. i did tons of custom work on those, but... this is a Lexus.
    Last question-Is there a .net member in the bay area who has done this kind of work and would be willing to advise or help?

  2. #2
    Maximum Bitrate pepsibobby's Avatar
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    most of those questions would probably get alot more help in the Fabrication section of the forum.
    1. For the navigtion, just put the monitor in where your stock navigation went so that you can put it back later if you need / want to sell the car. Using the stock screen for PC use or wont work good and I dont think you can use the navi with out the head unit.
    2. I doubt that there is a specific tutorial for your specific car that rarely ever happens.
    Cant code cause I dont know how, but give me the paint bucket and my eraser and have at you!

  3. #3
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    The thing is, I want to keep the OEM nav, and just pull the HU to install a touchscreen...
    thanks though, I'll look around over in fabrication.

  4. #4
    Variable Bitrate natedawgg's Avatar
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    your predicament sounds a lot like the one i face with my Trans Am. granted my car did not have a nav unit already installed, i needed to keep my factory HU in order for my stock speakers to work properly. my car has a built in amp that can only be accessed through the factory HU. i was able to find a P.I.E adapter that that plugged into the back of my HU and gave me essentially an AUX sound input to which i hooked my mini into. the problem with the installing the touchscreen and having the factory HU is that they both need to occupy the same space. my solution to the problem was to essentially disassemble my HU (luckily it was all modular in the first place), and then add extensions to each of the connection points of all the modules of the HU. This allowed me to essentially "collapse" my HU into a smaller package and mount it behind the touchscreen. Worked pretty well for me. It allowed me to keep my factory sound and steering wheel controls as well as getting the mini installed in a relatively OEM look. the only peice that i had to modify to the point that i would have to by a new one in order to resell the car was the outer piece that covers all the bolts and such (prob a $20 part). I think it would be pretty nice to have two screens in the car. on for nav and one for everything else. good luck with the install and let me know if you need anymore help. you may quickly realize that you have to become pretty creative in order to get the stock stuff to work with these kind of custom installs.
    Check out the new version of NAS, a cross platform music frontend here

  5. #5
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    Thanks for the reply, it looks like I'll either have to pull my HU and extend the necessary wires so that I can put it under the floor in the cargo area, (i have a lexus is300 sportcross wagon) or do what you did and try to break it down until all that's left is the circuit board and wiring. Don't know which one I'lll do yet, I'm going to buy a broken one from the junkyard and play with taking it apart. Thanks again natedawg.

  6. #6
    Variable Bitrate natedawgg's Avatar
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    that is a real good idea to practice. my dad had a rolled trans am that i was able to snag the HU out of and mess with it before moving to the real one in my car. far less srewups that way. good luck with the install. be sure to post some pics once you are done
    Check out the new version of NAS, a cross platform music frontend here

  7. #7
    Constant Bitrate golfguy's Avatar
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    Is the nav built into the head unit? If so, what is the video output? It's probably a composite output, or something that is not compatible with native VGA-type computer resolutions. If it's composite, you can work with it, since most screens have both composite and computer inputs. If you go with dual inputs, you'll have to work out how you control which input you want to show. Also, does your Lexus use touchscreen control with the current screen? If so, it's almost certainly incompatible with the Xenarc touchscreen, so you won't have any way to control the nav. You'd probably be better off using the computer for everything and saving the stock pieces to restore when it's time to trade. Just my $.02
    Any day is a good day for golf.

    Mazdaspeed6 Carputer Progress: Gone
    (Check Speedy's Install)

    Speedy was traded for a 2004 350z - Install complete except for permanent screen installation.

  8. #8
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    golfguy, the nav isn't built into the HU, but it needs to be connected to the HU to work. I want to keep my nav as a standalone unit but install a touchscreen in place of my HU for the mini. that means extending the HU wiring to the rear of the car and hiding it in the cargo area. The stock nav in my car doesn't use a touchscreen, there are buttons mounted on the console to control it, and i can give voice commands as well.

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