Lead (100, 400) having a proximal end (102, 402), wherein the lead (100, 400) includes a conductor, the proximal end (102, 402) comprising: a unitary connector pin (112, 412) having a socket end, a conductor end, and a necked-down portion arranged therebetween, the conductor end having a crimp cavity with an inner surface wherein a proximal end of the conductor is arranged in the crimp cavity; and a pin sleeve sleevably engaging the proximal end of the conductor and crimping the proximal end of the conductor against the inner surface, whereby a connector insulator including a center bore with a diameter configured for receiving the necked-down portion, and the connector insulator includes a central body, a distal extension extending therefrom, and a proximal extension extending from the central body opposite the distal extension, and a ring connector, whereby the conductor end is arranged in a relatively congested area where the ring connector, an insulator tubing, the connector insulator, the conductor end, the inner conductor, and the pin sleeve all overlap, the distal extension includes an outer diameter smaller than that of the central body and extends from the central body in the distal direction from a set of cascading shoulders, the proximal extension extends from the central body opposite the distal extension and includes an outer diameter smaller than that of the central body, and the transition between the central body and the proximal extension defines a proximal shoulder opposite the cascading shoulders, the ring connector including a band portion, a slot portion and a crimp portion, whereby the band portion includes a substantially cylindrical shape with an outer diameter matching that of the central body of the connector insulator. a unitary connector pin (112, 412) having a socket end, a conductor end, and a necked-down portion arranged therebetween, the conductor end having a crimp cavity with an inner surface wherein a proximal end of the conductor is arranged in the crimp cavity; and a pin sleeve sleevably engaging the proximal end of the conductor and crimping the proximal end of the conductor against the inner surface, whereby a connector insulator including a center bore with a diameter configured for receiving the necked-down portion, and the connector insulator includes a central body, a distal extension extending therefrom, and a proximal extension extending from the central body opposite the distal extension, and a ring connector, whereby the conductor end is arranged in a relatively congested area where the ring connector, an insulator tubing, the connector insulator, the conductor end, the inner conductor, and the pin sleeve all overlap, the distal extension includes an outer diameter smaller than that of the central body and extends from the central body in the distal direction from a set of cascading shoulders, the proximal extension extends from the central body opposite the distal extension and includes an outer diameter smaller than that of the central body, and the transition between the central body and the proximal extension defines a proximal shoulder opposite the cascading shoulders, the ring connector including a band portion, a slot portion and a crimp portion, whereby the band portion includes a substantially cylindrical shape with an outer diameter matching that of the central body of the connector insulator.