The Axxess AXADBXH-FD1 vehicle-specific installation harness for select 2007-UP Ford vehicles plugs directly to your vehicle's harness and the Axxess ADBOX interface. The only splicing of wires will between the new receiver and this harness. The AXADBXH-FD1 must be used in conjunction with the Axxess AXADBX-1 and AXADBX-2 to work and retain factory features such as Onstar, OE Bluetooth, etc.