A connector comprising: a connector housing including an upper wall, a bottom wall, and a side wall which define an opening having an U-shape when viewed from in a direction parallel to each of the upper wall, the bottom wall, and the side wall, wherein the opening opens in the direction; a terminal accommodated in the connector housing and including an end to which a wire is fastened, the end contacting both the upper wall and the bottom wall at the opening; and a cover which covers and uncovers the opening. The cover may be pivotally mounted to the connector housing.