Gps

what can i use to put gps on my touch screen car radio?

i have a touch screen dual car radio how can i get gps on it i already have a screen i don’t need another one is there a way a wire or something

this is one of the est gps i use no screen is just a black box ,antenaa and a remote
but the good part is that there are rca jacks out of this box with audio and video
this is all you need

http://www.marinetechna.com/product_info.php?products_id=165

Personal GPS Tracker with OLED Screen and Two Way Calling.wmv