I just put a 2003 Ranger Edge cluster in my 1996 ranger. You just have to look and see what lights might be different..... For example, my check engine light now reads Check Susp, and my Door ajar light reads Check fuel cap. But everything else works; gauges, tach, speedo, odo, etc.
I know that a 2004 and later cluster will not work though. The lateest you can use is a 2003.