I am looking inotthe same problem on my 1995 accord, and I have came up with the conclusion that it is the speedometer cluster its self. if you look at the wiring diagram you can see the the output from the speed sensor goes to multiple locations, one of them being the cruise control, and one of them being the speedometer. my speedometer does not work but my cruise control does. so If one thing is getting the signal, unless its a bad crimp or connection to the speedometer the speedometer must be getting the same signal, there for the speedometer is bad. here is a picture of the the diagram.