hi all i have a eonon 7" touch screen(g2213d) job in me van i also have a eonon vco1 voice control unit on dash thing is iv owned this thing for about 6 month now and its bugging me that i cant use it . it came with the head unit so should be compatible. i installed it to the spec's plug to plug for the head unit , 12+ to acc wire on ignition . ground to body obv . thing is the functions on the voice controller seem to work ie voice control color change /speech vol up /down, it just wont control the head unit . ie power on dvd /sat nav / off , am i missing a setting or a switch somewhere , posted here cos this forum seems to be the only one people answer so any help is awesome thanks ..mick