Factory Antenna Adapter to Aftermarket Radio Adapter for select 1987 to 2006 Nissan Infiniti vehicles. Exactly what you need to go from the factory radio to an aftermarket antenna. An OEM-diversity factory antenna with 2-pin plug for use with an aftermarket radio. Disables the diversity functions. Requires no modification to existing vehicle wiring. Makes replacing the factory car stereo very easy while retaining factory OEM quality.