You have to press the F4 Key to enter in the light adjustment menu. How do you turn the extra lights on in ETS2?ġ Answer. You should rather use the low beam ( + by default). Configure them using the quick access ( by default) or the “my truck” > “cabin modification” menu displayed on the right when the game is paused. How do you turn the lights on in American Truck Simulator?Īs you may work during the night (or during a heavy rainfall) you need to use lights. Another new feature is coming to ATS (and ETS2), the ability to “walk around” your truck and trailer while customizing them : trucksim.