OAR 735-108-0110: Mounting, Wiring and Aiming of Motorcycle Auxiliary Front Lamps

(1) Transportation Safety adopts the mounting requirements for motorcycle auxiliary front lamps as follows: (a) If one lamp is installed, mount the lamp on the left front side of the motorcycle; (b) If two lamps are installed, mount the lamps symmetrically around the front centerline of the motorcycle; (c) Mount lamps not less than 16 inches (40.6 cm) nor more the 42 inches (106.7 cm) above the ground; (d) Measure mounting height from ground level to the center of the lens of the lamp; and (e) Do not mount the lamps higher than the motorcycle headlight. (2) Transportation Safety adopts the wiring requirements for motorcycle auxiliary front lamps as follows: (a) The lamp shall be wired so it comes on with the motorcycle headlight; (b) The lamp may be wired so it is on with either the low or high beam of the motorcycle headlight; (c) A switch shall be installed so the lamp can be turned off when only use of the low beam of the headlight is required; and (d) A steady burning indicator light shall be wired and mounted in a location it is readily visible to the driver and be on when the motorcycle auxiliary front lamps are is use. (3) Transportation Safety adopts the aiming requirements for motorcycle auxiliary front lamps as follows: (a) Adjust lamps to a setting of 0-0 when using a mechanical aimer; or (b) When using a visual aiming screen, the lamp or lamps shall be aimed with: (A) The left edge of the high intensity zone of the beam at a vertical line straight ahead of the lamp center; and (B) The top edge of the high intensity zone at the level of the lamp center at a distance of 25 feet (7.6 m) from the lens.