The invention relates to a connecting piece for connecting to an electrode line and to an electric implant, whereby the connecting piece has an electrically conducting plug module, multiple ring-shaped electrically conducting contacts with insulation sections having the same outside diameter arranged in the longitudinal direction therebetween, multiple electric connecting lines, and a supporting element which supports the insulation sections and secures them in the radial direction. A through-bore situated within the supporting element receives the plug module and/or a feeder line of an electrode body. The supporting element has grooves spaced along the longitudinal direction, and recesses extending from the proximal end to the distal end and running parallel to the longitudinal axis wherein the electric connecting lines are fit.