Electrical conductor device semi-finished product comprising: a flexible printed circuit, FPC, comprising a first carrier layer of a flexible dielectric material and extending in a conductor longitudinal direction, and at least one first conductor path (12; 13; 14; 15) of electrically conductive material arranged on a first surface of the first carrier layer and extending along the conductor longitudinal direction, wherein the at least one conductor path (12; 13; 14; 15) comprises a plurality of first connection spots (12A; 13A; 14A; 15A) and a plurality second connection spots (12B; 13B; 14B; 15B), wherein the first and second connecting spots (12A; 13A; 14A; 15A; 12B; 13B; 14B; 15B) are arranged adjacent to each other with respect to the longitudinal direction, wherein adjacent first and second connecting spots (12A; 13A; 14A; 15A; 12B; 13B; 14B; 15B) which are arranged at a first distance to each other define a cut-off line between each other which extends cross to the conductor longitudinal direction, wherein first and second connecting spots (12A; 13A; 14A; 15A; 12B; 13B; 14B; 15B) which are arranged adjacent each other in a second distance being greater than the first distance define a functional portion between each other, and a casing layer of a flexible dielectric plastic material embedding the FPC, the electrical conductor device semi-finished product being characterized in that the FPC comprises at least one second conductor path (22; 23; 24; 25) of electrically conductive material arranged on a second surface of the first carrier layer and extending in the conductor longitudinal direction, wherein the second surface of the first carrier layer is oriented opposite to the first surface, the at least one second conductor path (22; 23; 24; 25) comprising first connection spots and second connection spots being arranged adjacent to each other with respect to the longitudinal direction and defining a cut-off line between each other. a flexible printed circuit, FPC, comprising a first carrier layer of a flexible dielectric material and extending in a conductor longitudinal direction, and at least one first conductor path (12; 13; 14; 15) of electrically conductive material arranged on a first surface of the first carrier layer and extending along the conductor longitudinal direction, wherein the at least one conductor path (12; 13; 14; 15) comprises a plurality of first connection spots (12A; 13A; 14A; 15A) and a plurality second connection spots (12B; 13B; 14B; 15B), wherein the first and second connecting spots (12A; 13A; 14A; 15A; 12B; 13B; 14B; 15B) are arranged adjacent to each other with respect to the longitudinal direction, wherein adjacent first and second connecting spots (12A; 13A; 14A; 15A; 12B; 13B; 14B; 15B) which are arranged at a first distance to each other define a cut-off line between each other which extends cross to the conductor longitudinal direction, wherein first and second connecting spots (12A; 13A; 14A; 15A; 12B; 13B; 14B; 15B) which are arranged adjacent each other in a second distance being greater than the first distance define a functional portion between each other, and a casing layer of a flexible dielectric plastic material embedding the FPC, the electrical conductor device semi-finished product being characterized in that the FPC comprises at least one second conductor path (22; 23; 24; 25) of electrically conductive material arranged on a second surface of the first carrier layer and extending in the conductor longitudinal direction, wherein the second surface of the first carrier layer is oriented opposite to the first surface, the at least one second conductor path (22; 23; 24; 25) comprising first connection spots and second connection spots being arranged adjacent to each other with respect to the longitudinal direction and defining a cut-off line between each other.