Place it in your Documents/Euro Truck Simulator 2/mod folder.
Here is a clean, professional template you can use for forums or mod sites: Extended Garage v2.0.6 [1.46] Extended Garage v2.0.6 1.46
Activate "Extended Garage v2.0.6" in the in-game Mod Manager with high priority. Place it in your Documents/Euro Truck Simulator 2/mod folder
More slots for your growing truck fleet. Extended Garage v2.0.6 1.46
Resolved texture flickering issues found in previous versions.