This is the installation instructions for installing a BMW X1 navigation unit. With 8" large HD screen, the BMW X1 GPS nav headunit replaces the BMW X1's storage cabinet, similar to factory BMW iDrive navigation system which is also with iDrive controller that slots in by the handbrake. You can learn more about our BMW nav dvd here: http://www.dvdgpsnav.com/bmw-nav-dvd