A complete 1965-1968 911/912 harness comes with everything new.  From the through body connectors, fuse panel, WECO connectors, protective sheathing, it's all new.  I have attempted to maintain the exact design as the factory did with the exception of using modern wire.  I don't need your old harness but I will probably have some questions about your car.  Please email me before ordering.  I try to keep one in stock but I need to know some specifics about your car.