The Scosche VW3A4B Wire Harness and Antenna Adapter Bundle is the ideal package for upgrading standard factory radios to aftermarket car stereos. This bundle is compatible with Select 2002-Up VW, BMW and Audi vehicles. Each bundle includes both a wiring harness and an antenna adapter all in one package. The wire harness is ONLY compatible with non-amplified factory systems. Pre-terminated with butt connectors to save install time. Includes an aftermarket antenna male (Motorola plug) to factory radio female (proprietary plug) adapter. Provides a direct connection to the factory harness without cutting any wires. Manufactured with factory quality wire and connectors. Meets the EIA industry standard with color-coded wires for an easier installation