Electrical connector with rear holder

An electrical connector with a rear holder comprising:

• a connector housing;
• a plurality of terminal accommodating chambers formed in the connector housing, each containing a resilient locking piece for preventing a terminal lug inserted therein, through an insertion hole substantially axially aligned therewith, from rearwardly slipping off;
• an opening extending to each of the terminal accommodating chambers, formed in an outer peripheral wall of the connector housing, the opening communicating with the associated accommodating chamber substantially perpendicularly to a longitudinal axis of the accommodating chamber at a position intermediate the length thereof;
• a rear holder integrally joined to the connector housing by at least one hinge strap and including a number of terminal locking projections corresponding to and insertable into the openings;
• and
• engagement means provided on the connector housing and on the rear holder, engageable with each other to have the rear holder mounted on the outer peripheral wall of the connector housing, the engagement means including means for having the rear holder mounted in a preliminarily engaged state and means for having the rear holder mounted in a fully engaged state,
• wherein when the rear holder is in the preliminarily engaged state, the terminal locking projections are located out of movement paths of the terminal lugs in the terminal accommodating chambers and when the rear holder is in the fully engaged state, the terminal locking projections are located in the movement paths of the terminal lugs.