A.R.S. § 28-949: Selling or using lamps

A. A person shall not have for sale, sell or offer for sale for use on or as a part of the equipment of a motor vehicle, trailer or semitrailer or shall not use on any such vehicle a reflector that is required by this article, head lamp, auxiliary driving lamp, rear lamp, signal lamp or parts of any of the foregoing that tend to change the original design or performance unless the lamps or reflectors are of a type that meets applicable federal safety standards.

B. A person shall not have for sale, sell or offer for sale for use on or as a part of the equipment of a motor vehicle, trailer or semitrailer a lamp or device that is described in this section unless the lamp or device bears the trademark or name under which it is approved so as to be legible when installed.

C. A person shall not use on any motor vehicle, trailer or semitrailer a lamp that is described in this section unless the lamp is mounted and adjusted to focus and aim pursuant to applicable federal safety standards.