A header assembly for connecting an implantable medical device to at least one conductor lead terminating within a patient intended to be assisted by the medical device is provided. The implantable medical device is comprised of at least one feedthrough wire extending from the control circuitry and through a wall of the housing. The header assembly is comprised of an insulative body that is mountable on the housing of the medical device. The insulative body supports at least one conductor subassembly comprising a terminal that is directly connectable to the conductor lead, an intermediate conductor comprising a distal end connected to the terminal and a proximal end connected to a connector. Methods for making the header assembly and for connecting the header assembly to the implantable medical device are also disclosed.