NOTE: The above lights meet the USCG requirements for 12-volt applications. All the above can also be used as 24-volt A.B.Y.C. A-16 certified lights on boats built prior to 11/1/03. To use as 24-volt lights while maintaining A-16 certification, replace the bulbs provided with the following: Cat. No. 0072DP1CLR 24-volt bulbs. Contact us for 24-volt applications on new construction.