One embodiment is an electrical stimulation arrangement that includes a lead having a lead body and first contacts disposed along a first end surface of the proximal end portion of the lead body and a lead extension having a lead extension body and second contacts disposed along the second end surface of the distal end portion of the lead extension body. Several of the first and second contacts form contact pairs with each contact pair containing one first contact and one second contact. For each contact pair, either the first contact or second contact is a male pin and the other of the first contact or second contact is a female socket configured and arranged to mate with the male pin when the proximal end portion of the lead body is mated to the distal end portion of the lead extension body forming a connector.
