This is the wiring set you need to convert a W211 E or W219 CLS with Harmon Kardon sound system to NTG2.5 (Hard Disk) Comand.
You will also need to purchase a new Harmon Kardon main amplifier and Sub Woofer amplifier - see our other products for more details. This item is on a few day lead time for this to be made to order.
You will also need to purchase a new Harmon Kardon main amplifier and Sub Woofer amplifier - see our other products for more details. This item is on a few day lead time for this to be made to order.