A flexible wiring system for an electronic system (1) has a real estate tax circuit (50) for controlling of specific control circuits (60, 70), data (dK (I)) to obtain from a sensor, a communication bus (135), with the real estate tax circuit (50) and the specific control circuits (60, 70) is connected, and a intermediate distribution unit (3) on. The intermediate distribution unit (3) has several first sides-connector ( [...] ), with the real estate tax circuit (50) and the specific Control circuits (60, 70) are connectable, and a plurality of second sides-connector (CNA), (DK (I)) and communicating with the sensors (DK (O)) are connectable actuator, on. The real estate tax circuit (50) communicates via the communication bus (135) Signals with the specific control circuits (60, 70), in such a way, that the specific control circuits (60, 70) (DK (O)) corresponding actuator according to data, the (dK (I)) from the corresponding sensors on the intermediate distribution unit (3) are obtained, can control.