The present invention provides a connector for use in a vehicle, the connector including a male connector, a female connector and a connector cover mounted on the circumferential surface of the female connector thereby providing secure connection and removing/reducing noise of the vehicle. More specifically, the female connector includes a housing, a projection formed to project on top of the housing, an operating lever horizontally disposed over the housing in the forward and backward direction to perform a seesaw motion, and a locking projection formed at the front bottom of the operating lever. On the other hand, the male connector is configured to be inserted into the female connector and connected to the female connector by the locking projection. Furthermore, the female connector is double locked and the connector cover is molded with ferrite powder to remove or reduce noise of the vehicle.