To provide a connector is provided in which insulated portions of wires can be securely connected with the terminal fittings mounted in a connector housing. A main body 2 of a housing 1 is integrally provided with a cover 43 via a hinge 17 at its rear end. When terminal fittings 7 are mounted in the housing 1 with the cover 43 in its open position, insulation barrels 40 of the terminal fittings 7 are exposed. Wires 19 are connected with the insulation barrels 40 by moving a crimper 42 and an anvil 41 from above and below, respectively, thereby securing the wires 19.