Electrical connector, comprising: an electrical terminal comprising a forward contact portion, an intermediate body portion, and a rearward attachment portion configured to attach the electrical terminal to an insulated conductor wire; a connector housing defining a first internal cavity extending along a longitudinal axis from a first face to a second face of the connector housing and defining a first opening in said first face configured for insertion of the electrical terminal, said first internal cavity configured to receive the electrical terminal, said connector housing further defining a second internal cavity extending along a lateral axis transverse to said longitudinal axis, wherein said second internal cavity is in communication with said first internal cavity; and a terminal position assurance device also called TPA device configured to be received within the second internal cavity and moveable along the lateral axis from an initial position within the second internal cavity to a final position that is distinct from the initial position, wherein said TPA device includes a flexible primary locking feature configured to cooperate with a corresponding locking surface of the electrical terminal to lock said electrical terminal in said first internal cavity when the TPA device is in the initial position within the second internal cavity and wherein said TPA device further includes a rigid second lock shoulder from a cross bar of the TPA device configured to cooperate with the corresponding locking surface of the electrical terminal to lock said electrical terminal in said first internal cavity when the TPA device is in the final position, the TPA device further comprising a rigid third lock shoulder defined by the cross bar of the TPA device characterized in that the intermediate body portion has an inclined portion that slants rearward toward the corresponding locking surface wherein the intermediate body portion of the electrical terminal comprises a flat surface intermediate the inclined portion and the corresponding locking surface and wherein the intermediate body portion further comprises another locking surface at an end of the intermediate body portion adjacent the rearward attachment portion, the locking surfaces (70, 74) being offset from each other in the direction of the longitudinal axis, and wherein the third lock shoulder engages the another locking surface of the electrical terminal. an electrical terminal comprising a forward contact portion, an intermediate body portion, and a rearward attachment portion configured to attach the electrical terminal to an insulated conductor wire; a connector housing defining a first internal cavity extending along a longitudinal axis from a first face to a second face of the connector housing and defining a first opening in said first face configured for insertion of the electrical terminal, said first internal cavity configured to receive the electrical terminal, said connector housing further defining a second internal cavity extending along a lateral axis transverse to said longitudinal axis, wherein said second internal cavity is in communication with said first internal cavity; and a terminal position assurance device also called TPA device configured to be received within the second internal cavity and moveable along the lateral axis from an initial position within the second internal cavity to a final position that is distinct from the initial position, wherein said TPA device includes a flexible primary locking feature configured to cooperate with a corresponding locking surface of the electrical terminal to lock said electrical terminal in said first internal cavity when the TPA device is in the initial position within the second internal cavity and wherein said TPA device further includes a rigid second lock shoulder from a cross bar of the TPA device configured to cooperate with the corresponding locking surface of the electrical terminal to lock said electrical terminal in said first internal cavity when the TPA device is in the final position, the TPA device further comprising a rigid third lock shoulder defined by the cross bar of the TPA device characterized in that the intermediate body portion has an inclined portion that slants rearward toward the corresponding locking surface wherein the intermediate body portion of the electrical terminal comprises a flat surface intermediate the inclined portion and the corresponding locking surface and wherein the intermediate body portion further comprises another locking surface at an end of the intermediate body portion adjacent the rearward attachment portion, the locking surfaces (70, 74) being offset from each other in the direction of the longitudinal axis, and wherein the third lock shoulder engages the another locking surface of the electrical terminal.