Any ideas on why my speedo would not work, but all my other gages would? I have the stock cluster, but I'm not sure what it could be if it wasn't just the cluster. The car is in storage right now so I have to wait to try the other cluster.

 

Check the VSS wire/connector on the tranny that provides the speedo signal.

 

^You can check the vss. But when my car was doing that it turned out to be the cluster.