An electrical connector (2) for receiving an electrical terminal (28) therein, the electrical connector comprising: a connector body (4) having a terminal receiving passageway (12) therethrough; a secondary locking member (6) co-operating with the body (4) and having a first portion where terminal (28) is fully insertable into the terminal receiving passageway (12) and a second position where the fully inserted terminal (28) is positively retained in the passageway (12); the connector (2) being characterised in that a releasable retention member (34) retains the secondary locking member (6) in the first position and the releasable retention member (34) is released upon full insertion of the electrical terminal (28) as a result of co-operation therewith.