Hello Don,
Start off by removing the steering wheel. The center pad pops off then just one 22mm nut to remove. Nextfremove the left lower dash pad (three screws), next remove the two screws holding the metal bracket holding two large electrical plugs under the dash and move it out of the way. This will give you a lot more room to get to the next step. Next remove the knurled thumb nut holding the tachometer in and remove the tack. Next remove the thumb nut holding the center cluster in and move it outward for more room, At this point you should be able to get to the speedometer with ease. Notice the two brown wires hooked under the thumbscrews of the speedo and tach. You will need to put them on during re-assembly. I never tried the wiper trick, but I will have to give it a try next time.