DO NOT, NOT, NOT get the Fm transmitter. Go with an adapter through the head unit or the cassette deck. There is another option which requires switching back and forth through your antenna input, and then there is this:
SoundLinQ (Model SLI) - Auxiliary Input Adapter with Apple® iPod™ interface (fits most Toyota/Lexus vehicles 2001-2007) Our SLI adapter allows you to have one universal audio Auxiliary input (uncontrolled source) and one audio input dedicated to integrate your Apple® iPod™ (3G/4G/mini/Photo,Nano and Video) directly into Toyota/Lexus OEM audio system (controlled source). You can now listen and control your iPod™ through the vehicle's head unit and audio steering wheel controls. No more Cassette Adaptors, FM Transmitters, or Cigarette Lighter Chargers. Enjoy the clear, genuine high quality sound through your factory audio system. SLI provides direct Plug-and-Play connection to Toyota/Lexus OEM audio system and supports vehicles with and without Navigation system.
Lexus GX470 iPod™ integration
MD changer emulation mode Our unique technology allows you to keep all factory installed components (such as 6-disc CD changer, CD/DVD changer). When you connect SLI to the audio system, Toyota/Lexus recognizes it as an additional CD or MD changer.
SLI can be set up in CD changer emulation mode or MD changer emulation mode. We suggest to use MD changer mode ONLY if your Radio supports MiniDisc changer with MD-TEXT, otherwise MD CHANGER mode is useless. Playlist Title, Song Title, Artist Name and Album name information can be displayed on the Radio LCD or Navigation screen ONLY if Radio Receiver supports MD changer with MD-Text or CD changer with CD-Text.
Audio AUX Input is universal auxiliary input and it enables you to connect uncontrolled Audio aftermarket equipment such as Satellite Radio Receiver, MP3 player, MiniDisc player/changer and etc. This source provides NO control over added aftermarket equipment. Added equipment operates through the factory Audio system and can only be controlled by its own controls.
Audio input dedicated for Apple® iPod™ can only be used for iPod™ integration. Control of iPod™ is done through your head unit or the steering wheel controls. SLI supports both third and fourth generation of iPod™ and iPod™ Mini.
To switch between the SLI sources you need to use "DISC" or "CD" button on the head unit (Diagram below assumes factory CD changer is present).
If your vehicle is equipped with a factory steering wheel control you will be able to switch between the SLI sources using "MODE" button on the steering wheel.
(Diagram below assumes factory CD changer is present).
[TRACK+] and [TRACK-] - Select desired track (song).
[DISC+] and [DISC-] - Select desired playlist.
iPod™ - CD emulation mode
(for Radio integrated into Navigation System)
iPod™ - CD emulation mode with CD-Text support
(for Radio integrated into Navigation System)
iPod™ - CD emulation mode with CD-Text support
(for Radio with own LCD)
iPod™ - CD-MP3 emulation mode with CD-Text support
(Camry 2007)
Available starting May 15,2006
iPod™ - MD changer emulation
now supports 999 songs in the playlist
(available for MD changer emulation ONLY)
SLI Connection diagram (Actual connection depends on the Lexus car model and Audio System configuration)
Connectors Description[/b]
Key Features: - Auxiliary Audio input (RCA)
- Audio input dedicated for iPod™ integration
- Audio Source selection and iPod™ controls via OEM Radio or
- Steering Wheel Controls *
- Artist/Song info displayed on the Navigation screen or Radio display **
- Track info displayed on the Navigation screen or Radio display
- Charging iPod battery while driving
- True Plug & Play solution
- Dimensions: 3-1/8"W x 1-5/16"H x 5-1/4"D (mounting bracket not included)
- Made in USA
- Warranty: 1 year
* Some functional limitations could apply depending on the Lexus model
** Available ONLY for the Lexus models with Radio supports MD Changer with MD-Text or CD Changer with CD-Text
SoundLinQ SLI KIT MSRP $329.99
Sale Price $299.99 Item includes: SoundLinQ SLI unit
Audio Harness
iPod™ interface harness
Operation Manual
Installation Manual
1 year Limited Warranty
Prices are subject to change without notice
Please refer to our Application guide for additional information.
For more information about our products please visit our
Frequently Asked Questions page or contact Customer Service department
You can download
SoundLinQ SLI Installation/Operation Manual rev 3.0 (05/16/06) 
Order processing may take up to 5 days.