theres a level built into the light housing...there are gears in there that you can turn to adjust it (check your manual for the instructions)
but you know they are supposed to be slightly different than each other...the driver side is actually supposed to be angled farther down than passenger so people on the opposite side of the road dont get blinded; passenger slightly higher to see things that could be dangerous that are on the shoulder (person, animal, etc)
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