Quote:
Originally Posted by wparsons
Someone correct me if I'm wrong, but I'm 99% sure that dial just adjusts the aim, not how bright they are. Aiming them lower will get less flashes because the cutoff is too low to really annoy oncoming cars.
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Yes it is headlight levelling you cannot adjust brightness.
just play with it ...u can see clearly the cutoff lines whether against the garage door or on the highway road ahead of u. or, in the glass at a tim's or gas station.