This electrical connector part (16) is adapted to be mounted on an automotive vehicle part, such as the vehicle floor, and to mate with an electrical connector counterpart mounted on a vehicle equipment part, such as a removable seat, the connector part (16) comprising: - a body provided to be fixed to said vehicle part; and - a contact element (22) accommodated in said body and having conductive units. The connector part (16) further comprises means (23) for displacing said contact element (22) between a retracted position wherein the conductive units are within the body and thus protected against mechanical damage, and a mating position wherein the contact element (22) projects from the body to allow an electrical contact between the conductive units and corresponding conductive parts of the connector counterpart, said displacing means (23) comprising a motor (40).