Devices, systems, and methods for repair and upgrade of the connection between a winding and a wye ring of a rotating electric machine. The system generally includes an attachment lug and a flexible lead having a curved central region formed of several layers of laminated copper. A first end of the flexible lead may be connected to the winding by the attachment lug and a second end of the flexible lead may be connected to the wye ring. The system may further include a wye ring assembly specifically configured to provide attachment for the connection elements.