Wire harness

A wire harness comprising:

• a single-core wire electrical cable that includes a single-core wire and
• a first insulation covering that covers the single-core wire;
• and
• a twisted wire electrical cable that includes twisted wires and a second insulation covering that covers the twisted wires, wherein:
• a leading end portion of the single-core wire exposed from the first insulation covering of the single-core wire electrical cable is overlaid on, and is electrically connected to, leading end portions of the twisted wires exposed from the second insulation covering of the twisted wire electrical cable,
• a water-blocking tube covers at least an overlap of the leading end portion of the single-core wire and the leading end portions of the twisted wires,
• in a cross-sectional view, the leading end portion of the single-core wire has a contact surface that is in contact with the leading end portions of the twisted wires, a base surface that is on the opposite side of the contact surface, and a side surface that extends between the contact surface and the base surface,
• in a cross-sectional view, the leading end portions of the twisted wires include edges that protrude sideways beyond the side surface of the single-core wire,
• the wire harness further comprises a separation member that is provided in contact with, or adjacent to, the edges of the twisted wires in a cross-sectional view such that the edges of the twisted wires and the water-blocking tube are not in contact with each other, and
• in a cross-sectional view, the separation member is not in contact with a non-edge portion of the outermost surface of the twisted wires other than the edges of the twisted wires.