Section 257.685
MICHIGAN VEHICLE CODE (EXCERPT)
Act 300 of 1949
257.685 Head lamps; number; modulator; height; auxiliary, spot, or other lamp; exemption.Sec. 685.
(1) Except as otherwise provided in subsection (2), a motor vehicle shall be equipped with at least 2 head lamps with at least 1 head lamp on each side of the front of the motor vehicle, in compliance with this chapter. An implement of husbandry manufactured on or after January 1, 2007 shall comply with section 684a.
(2) A motorcycle or moped shall be equipped with at least 1 and not more than 2 head lamps that comply with this chapter.
(3) A motorcycle or moped head lamp may be wired or equipped to allow either its upper beam or its lower beam, but not both, to modulate from a higher intensity to a lower intensity. A head lamp modulator installed on a motorcycle or moped with 2 head lamps shall be wired in a manner to prevent the head lamps from modulating at different rates or not in synchronization with each other. A head lamp modulator installed on a motorcycle or moped shall meet the standards prescribed in 49 CFR 571.108.