Waterproof structure for multicore wire

A waterproof structure for a multicore wire, comprising:

• a multicore wire in which a plurality of core wires are housed in a sheath;
• a housing in which is housed a terminal fitting connected to a terminal portion of the core wires, the housing including a tower part, the tower part being a cylindrical member having a through hole so as to define an opening through which the core wires are externally extracted;
• a molded part covering the opening and covering an end face of the sheath, the molded part including an outer circumferential part spaced apart from and concentric to an inner circumferential part so as to define a circumferential slit, the tower part inserted into the circumferential slit;
• and
• a resin stopper part disposed on an inner side of the molded part inside the opening.