[timboukvw]

hi does anyone know which cables the vagcom uses to comunicate with the navi?

 

[PetrolDave]

hi does anyone know which cables the vagcom uses to comunicate with the navi?

Just one - the K line.

 

[timboukvw]

which one is that? is it the ones which would have been connected to the dash with the old stereo. if that is the case then this s not connected to anythng as i haven't connected tmc yet. but i have comunicated with the stereo since i have disconnected the old one. grrrrrr

 

[PetrolDave]

which one is that? is it the ones which would have been connected to the dash with the old stereo. if that is the case then this s not connected to anythng as i haven't connected tmc yet. but i have comunicated with the stereo since i have disconnected the old one. grrrrrr

The diagnostic connection has nothing to do with either the lines that go to the dash or the TMC.

Look on the label on your old stereo and the RNS - both with have a pin labelled "K-line" or similar. That's all you need to connect (well plus power of course) for VAG-COM to be able to talk to your RNS.