MK4/B5.5 RCN210 Radio Quadlock to ISO Adapter. This makes installing an RCN210 100% plug and play in 2002+ MK4 and B5.5 with factory double din radio that used Quadlock plugs. Ignition, back-lighting, and multi function steering wheel CAN controls are retained. Cluster info and CD changer is not supported with RCN210 radios so the adapter does not contain that wiring.
This adapter will only work for RCN210 radios.