The invention relates to an electrical contact device (300), in particular to a twin-axial contact device, preferably a ferrule or a shield contact sleeve, for an electrical cable (50) , in particulara twin-axial cable for the automotive industry which comprises crimping sections (301, 303) with openings, in a crimped state of the contact device at/on the cable, the crimping sections (301, 303) which are closed and oval in crimping sections are installed at/on the cable by means of the crimping sections. The invention further relates to a method for assembling an electrical cable, in particular a twin-axial cable, for the automotive industry, wherein when assembling the cable (50), an open crimping section (301, 303) of an electrical contact device or an electrical connecting unit (10) at/on the cable is transformed into a closed crimping section at/on the cable, when transforming the open crimping sections into the closed crimping section, a crimping section which is oval in cross-sections and closed is installed at/on the cable.