The act or state of connecting wires/cables to terminals or between components in a circuit; wiring connections (often physical, not configurable).
製造ラインで基板の結線を目視で確認した。
On the production line I visually inspected the board's wiring connections.
結線ミスでショートが起きたため、回路を修理した。
Because of a wiring mistake there was a short circuit, so we repaired the circuit.