A connector (11) is provided with a connector housing (13) which is formed to be divided into a connector section (17) with a terminal accommodation chamber (23) formed therein, and a connector cover section (19), and in which the connector section (17) and the connector cover section (19) are integrated with each other by being slide-fitted to each other. A spacer (15) which is locked to the connector housing (13) at a temporary locking position and a final locking position penetrates the connector section (17) and the connector cover section (19), thereby restricting movements of the connector section (17) and the connector cover section (19) in a slide fitting release direction (E), whereby the connector housing (13) is integrally retained.