Speedo problem on my Gasser

[Klausen]

I have seen that the thin cable (labeled with power) on the little white connector (one of the 4) was broken.
After this connector is a little circuit protected from black heat shrink tube and then a bigger connector.
Now I sold the thin cables (red & white) with the thicker cables from the circuit directly (black & red) I believe.
The problem:
When I start the bike every segment on the speedo become black.
After pressing the button in the middle everything is fine except all data are delete.
When I stop the bike the clock is running!!
What is the problem.