Steering Wheel control Primary harness adapters convert the commands from your car's steering wheel controls to a code that an aftermarket radio can recognize. A patch lead is also requires for SWC type systems based on the brand of head unit you have. for more details check out our you tube video. http://aerpro.com/video/control_harness_installation CHVW5C CONTROL HARNESS C FOR VW PASSAT,GOLF IV, BORA, POLO, LUPO 1998 - 2003
This product is also known to work in the following vehicles: Volkswagen Passat 1998-2005 Volkswagen Golf 1999-2004 MK4 Volkswagen Beetle 2000-2010