hello, this unit has upgraded, please order below one instead:
http://www.seicane.com/double-din-pure-android-4-4-4-1998-2004-mercedes-benz-clk-class-c209-clk200-clk230-clk320-clk430-clk55-autoradio-navigation-system-with-hd-1024-600-touch-screen-cd-dvd-player-bluetooth-wifi-3g-mirror-link-obd2-k7507
1. For cars with only glove box and no big screen or navigation, the installation is easy and totally plug-and-play.
2. For cars with big screen or CD based Navigation, You need to check if the car has optic fiber amplifier. If yes, you will need to run a 6 meter long cable to bypass your original car’s optic fiber amplifier during the installation. Your original car’s optic fiber amplifier will not work after installation.
3. Even if your car’s optic fiber amplifier does not work, the sound quality of the unit is still very good. It has built-in 4*45W amplifier and this amplifier can drive four speakers of your original car (FL, FR, RL, RR).If you need all the speakers work, you can add an amplifier. This way of installation is relatively complicated and not totally plug-and-play.
Best regards
Durch
Seicane