A medically implantable electrical connector includes a housing having a bore with an internal V-groove or a flat bottom groove therein along with radial garter spring disposed in the V-groove or an axial garter spring disposed in the flat bottom groove. A pin is provided and sized for insertion in the housing bore. The housing, spring and pin are formed from a combination of medically implantable materials in order to control electrical resistivity between the housing, the garter spring and the pin.