A hood assembly attached to a female connector includes slide members on the top and bottom thereof which are slid in a direction perpendicular to a fitting direction of male and female connectors. As a result of a movement of the slide members, guide pins provided on the male connector is guided by guide grooves provided on the slide members to pull the male connector into the hood assembly, thereby fitting the connectors to each other. A hood portion of the female connector is inserted between upper and lower flanges of the hood assembly with anchoring holes provided on the hood assembly and anchoring projections provided on the female connector in positions shifted from each other, and the hood assembly and the female connector are slid in this state into a normal position where the anchoring projections engage the anchoring holes.