This adapter has filters built in that take care of turn on and off pop as well as engine noise found on most 1998-2001 Audi. When you add an Enfig SWCL this item also allows your steering wheel controls to work (if your car has them). May work on older cars call for more info.
These adapters convert the iso end of our RWH & SRWH harnesses intended for Blaupunkt radios into a connection made for most aftermarket radios without cutting a single wire. Not intended to be used without an RWH or SRWH harness.
Enfig PNP Plug and Play Adapters for aftermarket radios2