Operating unit for installation on the roof lining of a vehicle

The device (1) has a holding part (4) that engages the vehicle roof (2) via a plug-in coupling in the in-use position and that can be locked in the connection position with a locking device. Connection contacts (13) are arranged on the bearer part (3) and counter contacts (14) connected to connecting lines are arranged on the holding part so as to contact the connection contacts on the bearer part.