Not sure what to tell you about the indicator lights. They are all fed from the MPEM. Perhaps you should disconnect the battery and allow the computer to reset. There is a diagnostic tool that plugs in an uses the indicator lights to communciate issues. If you have access to one or buy one online, then it may help discover the problem. Sorry I can't offer a definitive solution.
As for the speedo, I had an isue with my speedo and replaced the speed sensor. Access was a little tight, but not impossible. Access from top and bottom helped.