Abstract: A method and an apparatus for smoothly and securely inserting a terminal connected to an electric wire into a terminal accommodating chamber within a connector housing from an opening in a notched rear end portion of the housing. The housing has an interior divided by partition walls into a plurality of terminal accommodating chambers each having a rear end defining an opening through which the terminal can be inserted, a notched shoulder portion formed in each partition wall at at least one of joints between the partition wall and top and bottom walls of the housing, and a terminal retaining cover capable of opening away from and closing onto the notched shoulder portions. A guide wall capable of engaging with the notched shoulder portions when the terminal retaining cover is open, thereby defining a flame-shaped terminal insertion opening, allows the terminal to be inserted through the terminal insertion opening.