Carefully lift the back of the bulb (with the socket assembly still attached) until the bottom of the bulb snaps out of the retainer.
Slowly pull the bulb and socket assembly to the front of the equipment compartment. Note: It may be necessary to negotiate the assembly through the other equipment.
Remove the old bulb and install the new one.
To reinstall the bulb into the retainer, engage two of the three bulb retainers with the top of the bulb. After the top is engaged, carefully push down on the back of the bulb until it snaps into the third bulb retainer.