Electrical connector with terminal position assurance device that facilitates fully inserting a terminal

An electrical connector includes a housing having a forward mating end and a rearward terminating end and at least one terminal-receiving cavity extending in a direction between the ends. A terminal is insertable into the cavity from the rearward terminating end of the housing. A TPA device is selectively engageable with the housing in two positions, preloaded and fully loaded, at the terminating end of the housing, with a terminal retention portion insertable into the cavity in locking engagement with the terminal. Complementary interengaging abutments are provided between the terminal and the TPA device for moving the terminal from at least one incomplete position of insertion to a fully inserted position in response to moving the TPA device from the preloaded position to the fully loaded position thereof. The TPA device is held on the housing in either of the preloaded position or the fully loaded position thereof in such a manner as to allow the TPA device to be readily removed from the housing along with the terminals therewith.