Abstract: An insertion module for a wire-assembly device for gripping, positioning and joining to connector devices contact-connector elements disposed at the ends of electric leads, particularly leads for motor vehicles. A lead end provided with a contact-connector element, fed by a workpiece-carrier gripper, is transferred to an insertion module, which includes a centering gripper and an insertion gripper. The insertion module can travel horizontal and vertically and surrounds the contact-connector element during the insertion operation with a positive fit and inserts the contact-connector element into the connector device in an insertion plane and tests for a proper lock.