Metra 70-1787 In-dash Wiring Harness and Amp Integration for 1993-2004 Audi/VW

Audi and VW models built between 1993 and 2004 with a factory amplified or premium system need more than a standard radio harness. The Metra 70-1787 is the amplifier integration harness for those vehicles: a 20-way connector that plugs into the multi-colored factory harness in the car, with RCA plugs on the other end that feed the OEM amplifier from the preamp outputs on your new receiver. The factory amp and speakers stay in place, so you keep the system's original output and tuning while gaining Bluetooth calling, USB audio, digital media playback and a camera input from the new head unit. No cutting, no splicing, and no pulling door panels to run replacement speaker wire. Metra builds it with flexible, heat-resistant wire and hand-assembled terminals held to OEM tolerances, so the connections hold through vibration and heat behind the dash. The whole install reverses in minutes, which matters if the car goes back to a dealer or a new owner. Lifetime warranty from Metra.