An air-conditioning outdoor unit includes a compressor having a plurality of terminals each including a plurality of conductive pins. The outdoor unit includes a plurality of lead wire groups provided for the respective terminals and each including a plurality of lead wires connecting a control board to the plurality of conductive pins, and a plurality of different end connectors provided for the respective lead wire groups and each attached to an end portion of the lead wire group adjacent to the plurality of conductive pins. The lead wire groups are each connected by the end connector to the plurality of conductive pins and cut into two parts at a given point in a longitudinal direction. The two parts of the lead wire group are detachably coupled together at the given point by a pair of relay connectors. A length from the control board to the given point and a length from the given point to the end connector differ from one lead wire group to another.