Mercedes SL 500 Upgrading navigation system and adding an amplifierOriginal system. Small screen…slow interface…no touchEverything removed…wiring the new systemFactory changer removed. New amplifier being installed in the changer location for tuning access.JL Audio XD 700/5Amplifier hiddenNew double din installed. Little modification required.Easy to use interface. Fast. Garmin navigation. Nice touch interface. Kenwood DNX 890HD.