A Question For Colin/geoffers Perhaps?

[Brettster]

Is the factory Sat Nav Screen in the 1999 GS300 Sport touch screen?

and what size and shape is it?

also is there any way to add an RGB input. Im thinking of course of adding my carputer into the GS and if the screen can accept RGB and is not already touch screen I could get a touch screen overlay kit to control the PC

Fingers Crossed :winky:

[ColinBarber]

It is touch screen and it's a 4:3 shape. Probably 5" or 6" in size.

[Brettster]

Thanks Colin

rules out the touch overlay idea then :(

FARGO how is the funky usb media wheel thing you got? might go that route instead.

[ColinBarber]

It's possible to feed in an RGB input though.

Screen is used more than on the IS as you use it for Stereo, climate control, fuel computer as well as Sat Nav so you need an easy way to switch between the Lexus system and your PC.

[Brettster]

Is it wired like a traditional RGB Composite Sync setup? or more like a VGA system with H and V Sync?

ChunkyMonkey has a PC in his GS300 with stock satnav and used a Composite to RGB converter

but Im not sure how he switches between the cars controls and the PC

is there a BOX that does all the hard work?

I really like the idea of a clean factory look :)

[ColinBarber]

You may want to speak with Geoffers/Prolex to see there are any of their products in the pipeline.

The screen input is R+G+B+Sync

[chunkymonkey]

I used a dash switch mounted to swap between the carpc and sat nav. See http://www.mp3car.com/vbulletin/showthread...highlight=lexus

The carpc has been updated since this but it give you an idea. The green switch is the manual power switch and the black switch above it is the display switch.

[Brettster]

Hi Martain, very nice set up, got any current pics?

Did you add a Relay to the inputs for the TV adapter/satnav ?

also how did you intergrate the PC sound into the stock hifi?

its looking good

[chunkymonkey]

Yes, the silver box in the pictures contains the display converter and also the relay which controls the switching between the pc and the sat nav display. I must thank Geoffers for his help with the rgb info.

The sound output from the carpc is integrated in to the stock amp. Let me know if you want me to send you the hookup diagram.

[ColinBarber]

Can you post how you hooked up the sound?

[chunkymonkey]

The carpc sound output from the four wires (left+, left-, right+, right-) each have a large electrolytic capacitor (non polarised) in series with them. They go to the lexus amp input via a relay which switches between the lexus cd input and the carpc.

[Brettster]

does this mod switch over the sound when the screen switches over? or is it seperate? and can you have the carpc playing mp3's and still hear the cars nav?

[chunkymonkey]

The relay that switches the sound over is controlled by my carpc rather than a seperate switch. So that when I star Winamp one of the actions the software does is to switch the sound from the Lexus cd player to the carpc sound output. The Lexus Sat Nav can still be heard while playing mp3's as it uses a different input to the amp.

[Brettster]

wicked this sounds perfect :)

im really looking forward to getting my carpc into the GS300 now

[chunkymonkey]

Managed to find the jpg drawing of the audio connection. Dont know how to post a picture that is not a web link. Let me know if you need a copy.

[Brettster]

Yes I would like a copy please :)

If you use the ADD REPLY button there's an option to attach a file just under the smiley icons at the bottom. :)