Factory NAV Screen From 2005 Acura TL

**hd54321** · 09-27-2005, 08:32 PM

1.) Look for a Acura wiring diagram. My Lexus wiring diagram is VERY thorough and specifies what each pin on each plug is used for. This way, you could potentially tap into the plugs without completely hacking up the LCD.
2.) According to your specs, this is a very standard resolution for NAV screens. All Pioneer LCD's in their car audio/video selection are 1440x234 (480x234). If connected correctly, they can be very sharp.
3.) Search online for an RGBS -> VGA converter. They're sold online and cost $100-$150. You're probably not going to get the vga resolution we all have come to know and accept (because the LCD can't do 480 horizontal lines).
4.) Figure out a way to tap into the touchscreen controller. Since you've identified that it's a standard 4-pin, there may be pins/space on the board for a USB plug.
5.) Figure out if the autodimming feature is independent of the car system i.e., does it have a photoelectric cell that governs the auto-dim feature? Or does it use the car's photoelectric cell.

...those are my ideas for now. I have a link at home for an online retailer that sells RGB converters for cheap, I'll post it later. Good luck and good find.

-HD

**MATRIXSHARK** · 09-27-2005, 09:07 PM

Thanks for the reply and for the info. I look forward to the link to the converters for cheap.

**Tranman** · 09-27-2005, 11:01 PM

I think you can use an Extron 109xi for a VGA to RGBS conversion. I was looking at doing a carputer for my Lexus, but ended up doing a modded Xbox since I already had stock Navigation...and the Xbox would do everything else I would need.

**phc** · 09-28-2005, 02:13 AM

If its only 480 x 234 resolution, then I'd sell that thing and get a real VGA screen.

**hd54321** · 09-28-2005, 03:40 AM

Originally Posted by MATRIXSHARK

Thanks for the reply and for the info. I look forward to the link to the converters for cheap.

BOOM!! http://www.converters.tv/converters/rgb/vga.html

**MATRIXSHARK** · 09-28-2005, 07:40 AM

Thankyou for the link. I'll bet one of these would do the trick nicely.

I hope you enjoyed the disassembly of the factory NAV screen. However, I think I'm going to go this route:

Originally Posted by phc

If its only 480 x 234 resolution, then I'd sell that thing and get a real VGA screen.

**Tranman** · 09-28-2005, 09:40 AM

Originally Posted by hd54321

BOOM!! http://www.converters.tv/converters/rgb/vga.html

But those are RGB to VGA converters....not VGA to RGBS

**hd54321** · 09-28-2005, 06:01 PM

Originally Posted by Tranman

But those are RGB to VGA converters....not VGA to RGBS

You're not converting the VGA signals from a computer, you're converting the LCD board's signals to accept VGA. The same concept applies to aftermarket TV tuners (that sell for $500) that can display composite video on an OEM Navigation screen.

-HD

**Tranman** · 09-28-2005, 10:37 PM

Originally Posted by hd54321

You're not converting the VGA signals from a computer, you're converting the LCD board's signals to accept VGA. The same concept applies to aftermarket TV tuners (that sell for $500) that can display composite video on an OEM Navigation screen.

-HD

Yes you are...stock OEM systems use RGBS input signals (if you are keeping the existing Nav system)...so you need to convert the VGA output of the computer into something the OEM LCD can use...believe me, I've researched and experimented with my system...and I have used those "composite to RGBS" converters (from VAIStech, AVelectronics), and they are horrible...very dull picture.

**tejesh83** · 10-09-2005, 05:27 AM

Were you able to find any chip/board info for the touchscreen and it's controller? I wonder how standard the 4 wire units are and if its possible to just hook up a usb 4-wire resisitive touchscreen controller from a Xenarc or Lilliput screen?