Hasso: welcome to the site. The people here are incredible in their help to the other members.

I bought my 02 America new, and after 7k miles the speedo went crazy. The odometer worked fine. I ended up buying a new speedo. Have 28k miles on the new one. Same cable.

So, if your odometer is still working, I don't think a new cable is going to help.

You have bought a great bike.

Enjoy!