Thanks for the clarification at least i now know whats what,as i said earlier everything works as it should i.e guidance spot on glovebox cd changer & radio work with steering wheel controls and show up in cluster but still no nav route in cluster although code with vagcom and shows in measure blocks that radio&navigation are coded,could this be cos i haven,t connected 2 of the CAN wires from the tmc unit to the back of the instrument cluster,also i don,t think the GALA is working properly cos there is no increase in volume no matter what speed i do.do you think this is definitely a CAN issue.
p.s. ican live without nav display in cluster but you know how some things just bug you and you need to sort it.