What could be the cause of the speedo tach and running lights not working on a 2002 SXT?

I'm experiencing the exact same problem with my newly purchased '96! I've been researching the issue and it seems that the easiest and least expensive fix is to replace the guage cluster (the half-circle compartment in the dash with all the guages in it)with another one, possibly from a junk yard. Of course you'll want to replace the junk yard odometer with your own, to keep the mileage as accurate as possible. I'm about to test this theory out myself and see if it actually does repair the problem... I'll keep you posted with the results.