To easily perform manual jointing and fixture, reduce the number of parts for easy management and decrease a cost by fitting a holding member to a male connector housing with a lever to hold a female connector.

A female connector 5 for a wire harness is held by a holding member 6, a lever 7 is mounted on the member 6 and a connector locking cover 8 is mounted thereon in a demountable manner. Pins 9 protruded on a male connector housing 1 provided with plural connectors 2 are engaged with a cam groove 71 formed in the lever 7 and the lever 7 is rotated in such a condition. As a result, the connectors 5 held by the member 6 are internally fitted to the portion 2 of the housing 1 at a time and male tabs are fitted and connected to terminals in the connectors 5. This allows manual fitting without using a special jig such as an impact wrench, no shock to occur during fitting, mounting without causing ill effect, the number of parts to be reduced and no increase of a cost.