Don't submit an application with the DMV yet!    The authority certificate and sales tax identification number are issued by the New York State Department of Taxation and Finance DTF. You can apply by visiting the NY State DTF website. Be sure to record your sales tax ID on the original Installation Request.
Where can i get more information?
You can also call the Office of Vehicle Safety and Clean Air at 1 - 518 - 474 - 4653 to get the forms, or call 1 - 518 - 474 - 0919 for more information.