Functional bridging of decoration openings

The part (1) has a decorative opening (12) formed between decorative elements (10). A cross section of a filler (13) is deformable, where the filler is provided with a core element, a spacer structure and a sheath. The spacer structure and the core element partially surround a sleeve. The spacer structure partially defines a gap between the sheath and the core element. The core element comprises a light conductor, a light source and an electric conductor. The light conductor and the electric conductor are provided with a covering, which comprises a fastening tab.