it uses a wedge bulb. i forgot the number, but im thinking 192? not quote me on that.

you dont have to disable anything. but if you are concerned, take the negative cable off the battery, since you are going to be unplugging harnesses...but its not too much of a worry.

there are two screws that are on top that you will remove. that will take the black trim area out. then looks for the screws that are holding in the gauges itself. shouldnt be more than 5-6. then unplug the 3 harnesses. and you should see the bulbs from the back. simply unscrew and replace. then work backwards from there.

i know there are images around floating on the net.