N.J. Stat. § 39:3-77
No person shall have for sale, sell or offer for sale for use upon or as a part of the equipment of a motor vehicle any unapproved device or equipment of a type which is required to be approved by the commissioner.
No person shall have for sale, sell, offer for sale or use any device, part or accessory which changes or is intended to change the design or designed performance of any device or equipment required to be approved.
No person shall have for sale, sell or offer for sale for use upon or as part of the equipment of any motor vehicle or motor-drawn vehicle any device or equipment of a type required to be approved unless such device or equipment bears thereon the trade-mark or name under which it is approved so as to be plainly visible when installed.
N.J.S. § 39:3-77