Move the file to your Documents/Euro Truck Simulator 2/mod folder.
Visit any Scania dealer or upgrade shop to apply the new interior look. SCANIA S&R 2016 BEIGE INTERIOR 1.45
Works seamlessly with both the Scania R 2016 and Scania S 2016 (Highline and Normal cabs). Move the file to your Documents/Euro Truck Simulator