A method of producing cut-to-length flexible electrical cords includes providing a flexible strip having a plurality of electrically conductive lines extending along the strip, arranging along said strip a plurality of electrical connectors including a plurality of tubular electrical conductors extending in a bridge-like manner between two subsequent portions of one of the conductive lines of said plurality, separating a portion of a given length from said flexible strip by cutting at least one said connector in a transverse plane, thus cutting the plurality of tubular electrical conductors in the cut connector, whereby said portion separated from said flexible strip forms a flexible electrical cord having, at one end at least, a plurality of electrical connection holes or sockets exposed as a result of the cutting of said tubular conductors.