Hi i'v decided to put a 7' moterised screen with built in dvd/cd/radio so set about it all was fine just plug and play although there was 3 plugs for my standard audi headunit and so i new i would lose my dash display where it told you what station/track number you where on which didnt bother me. So done this but only have sound coming from my front speakers so can anyone tell me how to source this problem i take it my rear speakers and sub are amped?? can you buy a aftermarket plug that fits all 3 plugs?? any help would be great Chris.