Hello Cristiano 
Thank you for the quick response .. the race for the game 07
With Race07 you have to edit the file PlayerName.plr, where PlayerName is the name of your player in Race07.
Let's suppose the name of your player in Race07 is xtremdriver
The path of the file to edit could be something like:
C:\Program Files (x86)\Race07\xtremdriver\xtremdriver.plr
The first part of the path could be a bit different.
Now open the file with notepad or an another editor.
Find the line:
Write Shared Memory="0"
and change it to:
Write Shared Memory="1"
Save and close the file.
Now Race07 is configured.
If you connect the display, start SimDash and Race07 you should have the speed displayed on the display.
There are some settings for the display you can change in SimDash. All you have to do is to open the configuration screen of the SPI-D plugin in SimDash.
Regards
Cristiano