adjusting headlights
i just put in new bumper lights and corner lights and a headlight buth headlights arent aligned right i kno the part that aligns them but what do u do to it? and dont ask why i only have one new headlight this has turned into such a project.
If you want to do it yourself without a headlight aligning machine, park on level ground facing a brick wall, garage door, etc (something with straight horizontal lines on it). You said you know what piece adjusts the headlight, so start to turn it. I don't know which way you have to do it in your specific case because you didn't say which way they were facing.

