New Scania 1.50
Extract the .scs files to the folder My Documents/Euro Truck Simulator 2/Mod (It is worth remembering that now some mods no longer need to be extracted and be exactly in the .scs format, now the game also accepts mods in .rar format, so stay connected)
Click on activate all to activate all Euro Truck Simulator 2 mods
(If the game closes, you must check that no DLC is missing, that you need to create a new profile or that you do not need to change the game mode if it is a map that you are trying to activate)