Disconnect the electrical power to your GE Spacesaver microwave from your kitchen circuit breaker.
Remove the screws from the lamp compartment covers directly at the bottom of the microwave using a Phillips screwdriver.
Lower the covers from the microwave and set them aside. Unscrew the light bulbs from the sockets and set them aside.
Remove the two screws from the light sockets or single bulb socket that you want to replace.
Pull the socket out of the microwave to unplug it. Insert the new socket part into the connector and reinsert the two screws.
Screw the light bulbs back into the sockets and place the cover back onto the bottom of the microwave.
Reinsert the screws into the lamp cover and turn the electrical power back on from the kitchen circuit breaker.