2011 ORS § 816.090¹
Registration plate lights

Each of the following is a requirement for registration plate lights as described:

(1) A registration plate light shall be so constructed and placed as to illuminate the rear registration plate of the vehicle.

(2) A registration plate light may either be constructed as a separate light or as part of a taillight.

(3) A registration plate light shall show a white light.

(4) A registration plate light shall render the rear registration plate clearly legible from a distance of 50 feet to the rear.

(5) A registration plate light shall be wired so as to be lighted whenever the headlights or auxiliary lights are lighted. [1983 c.338 §458 (6); 1985 c.16 §240 (6); 1985 c.69 §1 (6); 1985 c.71 §4 (6); 1985 c.393 §13 (6); 1985 c.420 §6 (6)]