The Metra BT-7550 adapter harness allows you to install a compatible Parrot Handsfree Bluetooth cellular kit into select Nissan vehicles (1995 and Up). 

One end of the adapter has a white rectangular 6-pin female connector and a white rectangular 10-pin (9 pins present) female connector. 

The other end of the adapter has the following connectors: 

white rectangular 6-pin male connector, 

white rectangular 10-pin (9 pins present) male connector, 

black rectangular 16-pin male connector (has two separate 8-pin connectors), 

and black rectangular 16-pin female connector (has two separate 8-pin connectors). 

The black 16-pin connectors plug into the Parrot harnesses, while the white connectors interface with the vehicle's factory wiring.