Lighting assembly inside the passenger compartment of vehicles

The device has a control circuit (5) that includes a capacitive detection sensor and controls a light source. An electronic circuit associated to the detection sensor measures the capacitance due to an electrode (12) and a hand (1) of a user. The circuit compares the capacitance to a threshold value, in order to control the switching on or switching off of the light source. Independent claims are also included for the following: (A) a process for implementing a vehicle inner lighting device (B) a motor vehicle including a motor vehicle inner lighting device.