The Metra 40-HD33 is a vehicle-specific antenna adapter kit engineered for select 2016+ Honda and Acura vehicles. Designed to retain factory antenna functionality during aftermarket radio or FM modulator installations, the 40-HD33 ensures proper AM/FM radio reception while simplifying integration with aftermarket audio systems. This adapter kit includes two specialized antenna cables that convert the factory Honda-style antenna connections to standard Motorola-style connectors commonly used by aftermarket radios and FM modulators. Built from high-quality materials with integrated strain relief, the 40-HD33 is designed for reliable long-term performance and clean plug-and-play installation. Features Honda/Acura antenna adapter kit Designed for 2016+ Honda & Acura vehicles Retains factory AM/FM antenna functionality Converts factory antenna to Motorola connection Plug-and-play installation Includes both male & female adapter cables Designed for FM modulator integration High-quality molded connectors Integrated strain relief construction Simplifies aftermarket radio installation Specifications Product Type: Antenna Adapter Kit Vehicle Compatibility: Select Honda & Acura Vehicles 2016-Up Connector Type: Honda-Style to Motorola Cable Configuration: Male & Female Adapter Set Installation Type: Plug-And-Play Included In The Box Cable #1: Male Motorola to Female Honda-style connector Cable #2: Female Motorola to Male Honda-style connector Common Vehicle Compatibility Honda Civic (2016-Up) Honda Ridgeline (2017-Up) Select Acura vehicles Additional Honda/Acura applications (Exact compatibility varies depending on trim level and factory radio configuration.) Installation Notes Designed for aftermarket radio installations Compatible with FM modulator systems Additional wiring harness may be required Professional installation recommended