I have a Volvo s40 2002, and the Speedo dose not work but all of my other dials do any advise thanks

 

How does the 2002 get speed info? Sensor on the trans? From the wheels? I'd try to find out how speed information is fed to the cluster then look at that part.

The cluster itself has 2 female connectors on the backside. Behind the cluster on a metal post are 2 male connectors that slide left/right to align with the female connectors. You line them up and push the cluster in to seat the connectors. If everything else works it suggests that the problem is not the connections but either the speedo head unit or the sensor feeding the speed info to the speedo head unit.