Waterproof resilient plug

A connector, comprising:

• a waterproof plug (10) unitarily formed from a resilient material and having opposite first and second ends and an outer circumferential surface extending between the ends, a wire insertion hole (13) extending between the first and second ends and defining an inner circumferential surface, a trunk (11) extending from the first end toward the second end, and a fixing portion (12) extending from the trunk (11) to the second end, portions of the wire insertion hole (13) extending through the trunk (11) defining a first internal diameter (d1), portions of the wire insertion hole (13) extending through the fixing portion (12) being gradually reduced from the first diameter (d1) adjacent the trunk (11) to a second diameter (d2) at locations in proximity to the second end;
• a wire (W) passed through the wire insertion hole (13) and engaged sealingly by the inner circumferential surface;
• a terminal fitting (20) having a wire barrel (20b) crimped into engagement with the a portion of the wire (W) projecting beyond the second end of the waterproof plug (10) and an insulation barrel (20a) crimped into engagement with the fixing portion (12);
• and
• a housing (H) with a terminal insertion hole (C), the terminal fitting, the wire (W) and the plug being inserted into the terminal insertion hole (C) such that the trunk (11) sealingly engages the housing (H) at the terminal insertion hole (C).