Add it yourself...
Disable VSC/TRAChttp://www.clublexus.com/forums/showpost.php?p=1913052
Aristo Wiring Diagram For Aftermarket Alarmshttp://www.jzs147.com.au/forum/viewtopic.php?t=1526
Window not winding down/up?http://www.jzs147.com.au/forum/viewtopic.php?t=1455
Change out the factory alarm LED with a super bright LEDhttp://bananags.grantham-international.com/GS_DIY/oemLED/
how to patch your alarms keyless entry into your aristohttp://www.jzs147.com.au/forum/viewtopic.php?t=966
how to wire up aftermarket alarmhttp://bananags.grantham-international.com/GS_DIY/ALARM/index.html
Change The Maplighthttp://www.lexusownersclub.co.uk/forum/index.php?showtopic=46389
A/c Codeshttp://us.lexusownersclub.com/forums/index.php?showtopic=3794
Lexus Alarm Wiring Diagramshttp://www.bulldogsecurity.com/wires/lexusindex.htm
more . . .
How to adjust Fog Light leveling/aim...http://www.clublexus.com/forums/showpost.php?p=2173908
How to replace your tail light bulbs (on body,not bootlid)http://www.jzs147.com.au/forum/viewtopic.php?t=1208
How to Change Inner Parking Lights (aka city lights)http://www.clublexus.com/forums/showpost.php?p=1894011
Lexus GS300 GS400 GS430 Replacement Bulb Size Guide http://www.autotalk.com/how-to/lexus-gs300-gs400-gs430/lexus-gs300-gs400-gs....b-size-guide.html
How to remove rear brake lighthttp://bananags.grantham-international.com/GS_DIY/change_brakelight/
How To Remove Your Headlightshttp://www.jzs147.com.au/forum/viewtopic.php?t=1750
3rd brake light disablehttp://bananags.grantham-international.com/GS_DIY/3rdbrake/
clear out your taillighthttp://bananags.grantham-international.com/GS_DIY/brakelight/index.html
extra brake lighthttp://bananags.grantham-international.com/GS_DIY/addedbrakelight/
here is the stereo wiring diagram for our carshttp://www.clublexus.com/forums/showthread.php?t=115421
Lexus GS300 Car Stereo Removal and Installationhttp://www.carstereohelp.com/stereoremovalLexusGS300Str.htm
How to Wire New Headunit to the Aristo Speakershttp://www.jzs147.com.au/forum/viewtopic.php?t=53
Lexus GS300 CD Changer Removal and Installationhttp://www.carstereohelp.com/stereoremovalLexusGS300CDChgr.htm
How to remove your Radio/Cassette Head unithttp://bananags.grantham-international.com/GS_DIY/remove_head/
Wiring up your new aftermarket headunit to the speakershttp://www.jzs147.com.au/forum/viewtopic.php?t=538
making an amp shelfhttp://www.jzs147.com.au/forum/viewtopic.php?t=1801
stereo upgradehttp://bananags.grantham-international.com/GS_DIY/STEREO/
Speakers Installed...PROPERLY (Official 2GS Install Speaker thread)http://www.clublexus.com/forums/showthread.php?t=104283
Make Your Own GS Cabin AC Air Filter for $6http://www.clublexus.com/forums/showthread.php?t=122075
replace Lexus AC Compressorhttp://www.lextreme.com/ac.html
instruction on replacing the battery on the Lexus remote and replace the air filterhttp://bananags.grantham-international.com/GS_DIY/hepa_filter/
Remove/Replace 98-2000 Navigation hard drivehttp://bananags.grantham-international.com/GS_DIY/change_nav_hd/
sony BlueTooth hands free car kithttp://www.clublexus.com/forums/showthread.php?t=116935
OEM NAVIGATION on a NON NAV-GShttp://bananags.grantham-international.com/GS_DIY/OEMGPS/
DVD/MP3 player in armresthttp://bananags.grantham-international.com/GS_DIY/DVDPLAY/index.html
TV mounthttp://bananags.grantham-international.com/GS_DIY/TVMOUNT/index.html
Change NAV destination while in motionhttp://www.clublexus.com/forums/showthread.php?t=167666
Hardwiring Valentine One Radar Detector in a GS430http://www.clublexus.com/forums/showthread.php?t=120585