Central Motors, a division of Toyota, produced the MR2 Spyder from 1984 to 2003. The headlights on your Toyota MR2 Spyder are important to your safety. A burnt-out headlight not only decreases your own ability to see at night---it also decreases other drivers' ability to see you at night. A burnt-out headlight could also cost you in the form of an expensive traffic ticket.
Open the hood of your MR2 Spyder, and put your key in the "Off" position.
Find the back of the burnt-out headlight assembly, and unplug the electric connector. Depress the plastic tabs on the sides of the connector with your fingers to loosen it; if you cannot do so with your fingers, press the tabs with a screwdriver.
Remove the rubber cover from the bulb socket, and release the retaining spring by pushing it inward.
Pull the bulb directly out, and put in the new bulb.
Replace the rubber cover, then click the retaining spring back into place.
Reconnect the electrical connector to the back of the headlight assembly.