Thanks for the help. I may go back and try and locate the tmc. Am I correct in thinking this just allows nav display on the dash?
Car is currently non bose but it's a consideration to retro fit it.
Starting to think I've bitten off more than I can chew! Will definitely be asking the entertainment guys when I come to wire it all in. Couldn't see an option on kufatec for the rns-d but may drop them an email. Have you just got the nav, tmc and a gps antenna dusty?