An electrical switch, in particular for controlling the lighting and signalling means of a motor vehicle, the switch comprising a housing (10) which houses a switch (200), and a lever (100) which includes a controller (120, 140, 160) that are mounted to be displaced relative to the housing (10) in at least two pivoting motions which are generally mutually crossed (I, II) and in rotary motion (III) about the axis (162) of the lever (100) in order to control respective ones of at least three basic electrical functions, the switch being characterized by the fact that the switch (200) comprise a single slide (220) which is mounted to be displaced in a plane, and a connector (166, 222; 124, 224) ensuring functional connection between the controller (120, 140, 160) of the lever (100) and the slide (220), so that the slide (220) is subjected to a specific kind of displacement for each of the three kinds of displacement of the lever (100), and is capable of ensuring respective electrical functions without disturbing control of the other two potential functions.