hi i'm kevin i have a fiat bravo with a grundig head unit and i need a code for it if anyone is able to help me.the unit is a grundig AD 182 H2 serial no:FA1092X1864618. there is another number tho i dont know wot it is no:735249778 i hope someone can help as singing to myself and having to listen is hurting my ears thx (kev).