not sure but I believe the speedo signle goes to the pcm first, so if the car doesn't have the electronic speedo I would think that it wouldn't have the pcm to cluster wiring, but then again I seem to remember the fact that a cable driven speedo in a 95 still has the vss and that a cluster will work by plugging it in.
actually this would be good to know because my cable driven speedo is wearing out and the needle bounces around alot at times