A system comprising: a medical device comprising an elongate body with a lumen, and an electrically controlled object; and a pair of wire harnesses comprising a first wire harness and a second wire harness, each of the first and second wire harnesses comprising: a wiring bundle comprising: a distal portion and a proximal portion; a plurality of twisted pair wiring; and a shield surrounding a portion of the plurality of twisted pair wiring; a distal flex circuit connected to the distal portion of the wiring bundle, the distal flex circuit configured to operatively connect to a flexible printed circuit of the electrically controlled object; wherein the first wire harness and the second wire harness are each operatively connected to the same flexible printed circuit of the electrically controlled object, the flexible printed circuit being configured to be folded over onto itself along a fold line to reduce its width; and a proximal flex circuit connected to the proximal portion of the wiring bundle, the proximal flex circuit configured to operatively connect to an electrical connector; wherein each of the first and second wire harnesses is sized and configured to extend substantially through the lumen of the elongate body of the medical device. a medical device comprising an elongate body with a lumen, and an electrically controlled object; and a pair of wire harnesses comprising a first wire harness and a second wire harness, each of the first and second wire harnesses comprising: a wiring bundle comprising: a distal portion and a proximal portion; a plurality of twisted pair wiring; and a shield surrounding a portion of the plurality of twisted pair wiring; a distal flex circuit connected to the distal portion of the wiring bundle, the distal flex circuit configured to operatively connect to a flexible printed circuit of the electrically controlled object; wherein the first wire harness and the second wire harness are each operatively connected to the same flexible printed circuit of the electrically controlled object, the flexible printed circuit being configured to be folded over onto itself along a fold line to reduce its width; and a proximal flex circuit connected to the proximal portion of the wiring bundle, the proximal flex circuit configured to operatively connect to an electrical connector; a wiring bundle comprising: a distal portion and a proximal portion; a plurality of twisted pair wiring; and a shield surrounding a portion of the plurality of twisted pair wiring; a distal portion and a proximal portion; a plurality of twisted pair wiring; and a shield surrounding a portion of the plurality of twisted pair wiring; a distal flex circuit connected to the distal portion of the wiring bundle, the distal flex circuit configured to operatively connect to a flexible printed circuit of the electrically controlled object; wherein the first wire harness and the second wire harness are each operatively connected to the same flexible printed circuit of the electrically controlled object, the flexible printed circuit being configured to be folded over onto itself along a fold line to reduce its width; and a proximal flex circuit connected to the proximal portion of the wiring bundle, the proximal flex circuit configured to operatively connect to an electrical connector; wherein each of the first and second wire harnesses is sized and configured to extend substantially through the lumen of the elongate body of the medical device.