Not to take the thread off topic, but the 89-92 body style Colt/Mirages were unique in that they all have the same wiring harness (for the individual years) for the sticks and one for the automatics. If you get a cluster that has a tach in it, the tach will work (cluster just plugs in). Not having a tach bugs me also. If you get one out of a GT or turbo car, the speedo goes to 150 also-although I have never swapped a one of these into a regular colt so I don't know how the speedo may or may not change.
Same for the clock, if it didn't have one, the wiring is still there; plugs into the clock blank.