An electrical distribution system suitable for use on motor vehicles where electric current is to be supplied selectively to one or more electric power consuming devices, wherein there is provided a main power carrying conductor and a plurality of signal carrying lines which energize one or more of a plurality of actuators to interconnect the power line to a selected electrical device, in which the power line is in the form of a metal strip of sufficient rigidity that the actuators can be mounted thereon by a mounting which also makes electrical contact thereto.