Remote headlight adjustment

[eshtebah]

I am not sure if my electric headlight adjustment wheel on the dash is working.
If I turn on the lights facing the garage wall with all 4 lights on (with ignition key in no.2 position) and move the adjustment wheel to the no.1 or no.2 position I can hear a motor going but no movement in light beams. Which lights should move, the two outer, the two inner or all four. Would appreciate your comments.