VTR Adapter/External Terminal Input Connector: Just attach it to genuine navigation system such as Toyota, Lexus, Daihatsu or dealer option navigation system to easily expand various game consoles, DVD players, terrestrial digital tuners, ipod/MP3, camcorders, and digital camera devices in your car. Enjoy DVDs, games, terrestrial digital and music from the same day. No need to worry about your passengers getting bored during traffic jams or long travel time. A must have to make your ride more comfortable! If the output terminal of playback devices such as music players are a mini jack, then the mini-plug and pin plug conversion cable is required. Cannot be used with dealer optional terrestrial digital tuner or dash cam. Installation Method: Attach this product to the free 6-pin connector on the back of the original navigation system. If the connection destination is already connected, please remove the vehicle side connector and connect this product. The connectors are coupler type, so there is no need for wiring and easy installation. Note: It is prohibited by road traffic laws to see the navigation system or TV screen while driving. This product was developed to provide passengers and other people who are other than the driver to enjoy while driving. When installing the product, please stop the engine and take sufficient caution while the battery is removed. Incorrect installation may result in malfunctions and serious obstruction of the vehicle. In such cases, we are not responsible for anything. Please check for compatibility before bidding/purchasing. We will not accept any effects on the navigation system or vehicle, or return or refund after modification or installation, or requests for the costs required during installation. Since this is not a specialty store, we cannot answer any questions such as vehicle fitment or installation method. Thank you for your understanding. Installation instructions are not included. If you are not confident about installation, please consult a specialist store. Depending on the car model, you may not be able to watch DVDs. Even if the year, grade, model, and navigation model number match match, we cannot guarantee it will fit.