An object of the present invention is to provide a connector having a pair of connector housings fitted through an attachment hole in a body panel, which is easily confirmed whether or not the fitting is complete. The connector 1 has a first connector housing 3 and a second connector housing 4, and a position regulator 5. The connector housing 4 has a flange 17. The position regulator 5 regulates the movement of the first connector housing 3 until the connector housings 3 and 4 are fitted, and allows its movement after fitting. The first connector housing 3 is temporary locked in a hole 7 of a panel 2 and the second connector housing 4 is fitted. After the fitting of the connector housings 3 and 4, the second connector housing 4 is approached to the body panel 2. The flange 17 approaches to the body panel 2. The second connector housing 4 is locked to the body panel 2.