Scosche VW03B Wire Harness to Connect An Aftermarket Stereo Receiver for Select 2002-Up Audi/BMW/Volkswagen Connects an aftermarket stereo to the factory radio harnesses. Not compatible with factory amplified systems. Direct Connection to the factory harness without cutting any wires. Manufactured with factory quality wire and connectors. Standard color coded wires for an easier installation. Eia Standard Wiring Color Codes Wiring Harness For 2000 & Up Volkswagen, Bmw