A connector housing has a terminal receiving portion at its rear side and an opposing connector coupling portion at its fore side. The terminal receiving portion includes a plurality of the terminal receiving channels separated by a plurality of partition walls extending in the connector engagement direction and each side wall is provided with a locking projection. The opposing connector coupling portion has a guide wall member that defines an insertion cavity for receiving a vehicle side fitting member. One of a plurality of wire-press-fit-type terminals is received in each of the terminal receiving channels for press-fitting an electrical wire therein. The terminal receiving portion has a cover, with a fore end of the cover being attached to the connector housing with a hinge, and each side wall of the cover has a lock hook that is engaged with one of the locking projections. The guide wall member has a cut-out recess for receiving a fore end portion of the cover and the lock hook of the cover engages with the locking projection of the connector housing when the cover closes the terminal receiving portion. The insertion cavity of the connector housing receives the vehicle side fitting member so that the fitting member abuts against the cover to further secure the cover to the connector housing.