i recently changed my axels and my alternator on my 90 crx and now my speedometer does not move- my fuel and temp work- but not the speedometer..
i took the dash apart to see if anything was unplugged- but it all looks good

HELPPPPPP

 

Check the speedometer cable under the hood, follow it from the firewall as it enters into the transmission, it probably popped out. If it's in tight, pull the cluster out and see if it's still connected. If it's good there as well, then your speedometer cable is bad.