A connector comprises: a connector housing that has a lock arm that locks a mated corresponding housing in a corresponding housing mating chamber, an arm operation part that can displace the lock arm to a position that releases the lock by an operation, a wire extraction part that is positioned in the release operation direction of the arm operation part and guides wires that are guided to the outside, a cover attachment part provided on the wire extraction part; and a wire cover that has a housing attachment part that is inserted into the peripheral side of the wire extraction part of the connector housing and mated to the cover attachment part and an arm excessive displacement prevention part that restricts excessive displacement of the lock arm.