My old cluster fucked up and went bad, so I purchased a 92 DX cluster from a junk yard and it seems as if the speedometer head has gone bad, i was thinking about purchasing a jdm guage cluster, but since my car does not have a rpm tach, what would i have to do to get the rpms to work on the jdm cluster?? is it just plug and play, cause thats what i keep hearing, but i wasnt sure, i would just figure there would have to be some type of wiring done to get the rpms to work on the left side and the temperature guage and the gas to work on the right side of the cluster. well if anyone can post and help on this, i would greatly appreciate it. thanks.