FITTING AN OEM WIDESCREEN SATELLITE NAVIGATION SYSTEM
IN A NON-NAV LEXUS GS

This is what I used:-



86111-30220 (86111-30230 is LHD)
DISPLAY, MULTI-DISPLAY (CRT DISPLAY)
Found on:-
GS300/430 RHD European, July 2000-July 2001
Possibly interchangeable with 86111-30221 (RHD), 86111-30231 (LHD), used from July 2001-January 2005
The touchscreen.  A nav project ain't a nav project without a touchscreen!  This is also the display for the air conditioner and audio system.



86120-3A602 (86120-3A592 is LHD)
RECEIVER ASSY, RADIO
Found on:-
GS300/430 RHD European, July 2000-July 2001
Possibly interchangeable with 86120-3A603 (RHD, P3732), 86120-3A593 (LHD, P3731), used from July 2001-August 2002
Possibly interchangeable with 86120-3A880 (RHD, P3738), 86120-3A870 (LHD, P3737), used from August 2002 onwards
The tape deck, equipped with some audio controls but no display.  This one's a Pioneer P3725, the LHD one is a P3723.



88650-3A330
COMPUTER ASSY, AIR CONDITIONER
Found on:-
GS300/430, all regions from July 2000 onwards (Australia from July 2001 onwards)
Aristo, July 2000 onwards
This does same job as the climate control panel in a non-nav GS, but without the control buttons.  Instead it gets its instructions from the touchscreen via the gateway ECU.  It's bolted to the same brackets as the display and radio to form one big unit.



86841-47030
COMPUTER, NAVIGATION
Found on:
GS300/430 European, July 2000-July 2001
LS430 European, August 2000-July 2001
RX300 European, July 2000-February 2003
Land Cruiser 100 European, August 2000-August 2001
Prius European, May 2000-August 2001
Possibly interchangeable with 86841-13020, used from July 2001-January 2005 and found in the above vehicles plus the SC430
Australian vehicles should probably use the 86841-24020, used from July 2001-January 2005 and found in the above vehicles plus the ES300, SC430, Camry, Avalon and LX470
Looking like a CD autochanger, this is the brains of the outfit and sits in the boot.  Mine came from an LS430 and is a "Generation 00" unit, the first of the widescreen models. It has a slot-loading DVDROM drive to take the map DVD.
Try and get the mounting frame (86274-50080 or 86274-30321, plus 86285-30050) if you can, it'll make mounting the unit much easier.



89111-30010
COMPUTER, NETWORK GATEWAY
Found on:-
GS300/430, all regions from July 2000 onwards (Australian GS300 from July 2001 onwards)
Aristo, July 2000-January 2005
The gateway ECU lets the AVC-LAN (Audio Video Communication Local Area Network) and BEAN (Body Electronics Area Network) circuits talk to each other.  Leave it out and the climate controls don't work.  You should find it in any Mk.2 GS or Aristo equipped with widescreen satnav and/or audio controls on the steering wheel.  It's small, easily overlooked, and essential.  If you buy the LHD one for a RHD car (or vice-versa) the bracket won't fit but can be made to stay put without much difficulty.


86860-30022
ANTENNA, NAVIGATION
Found on:-
GS300/430, all regions from July 2000 onwards (Australian GS300 from July 2001 onwards)
This antenna connects to the grey socket on the navigation unit.  You may find that many Toyota/Lexus receivers will work, but you may have to hack the plug a bit to get it to fit.  I used a Toyota one, part number 08663-00120.  This doesn't appear in the Toyota or Lexus Electronic Parts Catalogue (not that I've seen, anyway) but I think forms part of a navigation antenna assembly that consists of the antenna (which you need) plus a mounting bracket (which you don't).



PLUGS
Three extra plugs are required in order to connect to the touch screen.  Two more are required for the navigation unit.  If these aren't obtained with the screen and nav unit, they may be salvageable from other locations in other cars in the Toyota or Lexus range.  The clock plug fits the screen, for example, but is a pin short so you'd need to scrounge two.
When I bought the touch screen it came with all nine plugs shown here, but the four in the middle aren't needed (they fit the aircon and cassette deck, but the plugs already in the car will be used instead).


CABLE
I've used four cables here; a 6-core screened cable (black) used for data and signalling, a 4-core screened cable (grey) used for video and two 0.75mm² three-core mains cables (black) used for speaker and power connections.  All four are taped together at regular intervals and run along the right-hand cable channel from the boot to the dashboard.  The 4-core cable is about 6m long, the other three about 7m long.