1995 Chevy Corsica speedometer not working

Ok lets do a simple test first to see if the guages even will react ok. What you need to do is unplug the single wire connector to the temp sending unit for the guage and with the key on engine off have someone watch inside and gound the wire and the guage should peg hot if not then we will go through and test to see if the instrument cluster it bad. Let me know what you find ok.