[. . . ] [. . . ] Remove the Map disc out of the navigation unit and insert the Map disc which is provided in the package. The use of any accessories except for those provided might result in damage to the unit. Make sure only to use the accessories shipped with the unit, as shown above. 2WARNING If you connect the ignition wire (yellow) to the car chassis (ground), you may cause a short circuit, that in turn may start a fire. [. . . ] [. . . ]