Manual control for the regulation of the position of a seat

A manual control to adjust the position of the seat of a motor-vehicle, wherein the different control circuits are selected by means of a rotating knob switch (4), provided with contacts (6) to close one or more circuits supplying electric power to motors for each of the parts (8, 10, 12, 14, 16) of the seat which are to be moved. Said contacts are located in correspondence with a backlighted figure representing the part of the seat to be moved with the corresponding contact.