ace lawrence

Hello guys, I just got the new navigation system for my car and I would like to know how can I connect the iPhone to the device. Can someone help me? This is the item link, http://www.autocardvdgps.com/impreza-dvd-gps/351-subaru-foresterimpreza-dvd-playerin-dash-gps-navigationdigital-hd-touchscreen.html Thank you in advance!