Conversion S6 to RS6 Tacho

Hello

I hope to have caught the right forum...

I have a question; I drive an S6 4B built in 2000.

This was completely converted to RS6 optics incl. the speedometer of RS6 (D12).

The Symphony Radio was exchanged for the Navi Plus.

The speedometer also works perfectly except for the consumption indicator and residual kilometer indicator and the transmitter indicator/navigation indicator in the upper part/third.

The Navi Plus works after the "knitting" Gala Signal etc. etc.

With my old S6 Tacho the ads worked in the Fis, I have a little experience, can also recode and program with the corresponding software but unfortunately I can not get the ad.

Have also read myself a little bit here but do not find the problem, or I am wrong and mine has org. no TMC had and I have to retrofit it?

Or do I have to pull cables from Navi Plus to the instrument cluster?

Who can help?

Thank you, Jörn