On an Integra the outter adjustment moves the light left and right there is a little black housed indicator with a red 0 in the middle and lines on either side. The inner adjustment a bit harder to see but that one moves the light up and down. there is a level on the top of the light that will indicate the pitch. I don't know what they are supposed to be set at but I just tweaked it several times till I got it to where I was comfortable.