in one embodiment , a method of fabricating a stimulation lead for stimulation of tissue of a patient , the method comprises : providing a plurality of cables , wherein each of the cables comprises a plurality of wires twisted about a core support and disposed within an outer sheath , wherein each of the plurality of wires comprises a coating of insulative material to electrically isolate each wire from each other wire within the respective cable , each of the plurality of wires being disposed in a single layer circumferentially about a central axis of the respective cable ; wrapping the plurality of cables about a central core in a helical manner to form a cable assembly .