For lights behind the speedometer/tach warning light area, you have to take the screws out of the panel and then guide it out enough that you can twist it sideways and pull out the burned out bulbs. Replace with bulbs #194 and I would use the Long Life version of the bulbs.
You have to reach under the dash behind the gauges and twist the rectangular knobs. There should be 2 behind the speedometer, 2 behind the rpm's, 2 for the blinkers, and 2 at the bottom of the rpm gauge. The bulbs will be in the knobs.
It is practically impossible to reach up behind the dash to change the bulbs. Remove the trim around the instrument panal and you should be able to pull it out enough to change the bulbs. You may have to disconnect the speedometer to get it out far enough.
One of the bulbs have probably burned out. Set the emergency signals on and go to see which one is not blinking. Change burned bulbs in pairs, cause the other one will probably burn out after you change one.