An electrical connection piece including: a flexible circuit board having: a central section penetrated by contact openings arranged mirror-symmetrically； a first and second arm, each of the first and second arms extending in different directions away from the central section, the end of the first arm having a first end surface, the end of the second arm having a second end surface, the end of the first arm having a third end surface opposing the first end surface and end of the second arm having a fourth end surface opposing the second end surface； first strip conductors extending between the contact openings and first electrical contacting surfaces； and second strip conductors extending between the contact openings and second electrical contacting surfaces； wherein the first electrical contacting surfaces have a contact configuration different from a contact configuration of the second electrical contacting surfaces.
