The Metra 70-1785 is an amplifier integration and tuner bypass harness designed for select Audi and Volkswagen vehicles equipped with factory amplified audio systems. This harness allows you to install an aftermarket radio while retaining the OEM amplifier and bypassing the factory tuner system for a cleaner and more reliable installation. Engineered for plug-and-play installation, the 70-1785 connects directly to the factory radio harness without cutting factory wiring. It features low-level RCA connections for use with aftermarket radios equipped with preamp outputs, making it ideal for maintaining factory amplified sound systems while upgrading to modern multimedia receivers. Key Features: Retains factory amplified audio systems Factory tuner bypass functionality Designed for select Audi & Volkswagen vehicles Plug-and-play installation No factory wire cutting required RCA low-level inputs for aftermarket radios OEM-quality connectors for secure fitment Color-coded wiring for simplified installation Compatible Vehicle Applications Include: Audi 80 / 90 / 100 / 200 Audi A6 / Cabriolet / S4 / S6 Volkswagen Jetta Volkswagen Passat Volkswagen Corrado Porsche 911 (select models) Vehicle compatibility varies by year and factory audio configuration
