Multiplexed control devices for a set of electrical devices, e.g. in a motor vehicle

A system for controlling a set of electrical devices in a motor vehicle, the system being of the type comprising a decoding module for a group of such devices, the decoding module receiving an electrical signal containing instructions of a non-preselected sequence to switch on and switch off the electrical devices in the group and delivering control signals on the basis of said instructions, and a set of switches controlled by said control signals and each connected between a common electrical power line and a respective electrical device in the group, wherein the controlled switches are mounted in the immediate vicinity of the respective electrical devices of the group, wherein the decoding module is housed in a housing which is separate from the controlled switches, and wherein individual electrical control lines connect said decoding module to each of said controlled switches.