Primary locking in cavities
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Cable terminals without locking tab
The primary locking is permanently located in the housing as an integral part of the cavity.
Cable terminals without locking tabs are used with housings which have integral primary locking in the cavities. An example is the 1.6 Pin/Socket.