You'll want to unclip the speedometer cable from the panel under the driver's side floormat, in the vicinity of the brake pedal. This should provide enough slack to pull the cluster out. It helps if you extend the steering wheel as far out as possible.

When replacing the bulbs, DO NOT use 5-watt 194 type wedge bulbs. The correct bulb is Sylvania 2821. 5 watt bulbs will melt the light prisms.