Cable connectors for connecting two multicore cables are provided including a clamping sleeve, having a ceramic insulator with openings on each side of the sleeve, for accommodating core conductors. The clamping sleeve includes contact inserts passing through the clamping sleeve. Clamping elements are provided to clamp the core conductors to the contact inserts to electrically connect the multicore cables. The cable connector has a heat shrink tube that surrounds the clamping sleeve and the cables. Furthermore, cable termination including a clamping sleeve with a ceramic insulator with openings for core conductors is provided. Contact inserts are situated behind the openings to clamp the core conductors on the contact inserts establishing mechanical fixing of the core conductors on the clamping sleeve. The cable termination includes a heat shrink tube as according to the first aspect.