Power comes from the dome fuse, through junction block 1, and finally to the dome lamp. When the dome lamp switch is placed in the ON position, it provides a path to ground to the dome lamp and the lamp will illuminate.

Power comes from the dome fuse, through junction block 1 and finally to the dome lamp. When any door is opened, the corresponding door jamb switch contacts close. The closed contacts causes the multifunction alarm module to provide ground to the dome lamp and the lamp will illuminate.

Power comes from the dome fuse, through junction block 1 and finally to the dome lamp. When the transmitter activates the keyless entry system it causes the multifunction alarm module to provide ground to the dome lamp, and the lamp will illuminate.

Power comes from the dome fuse, through junction block 1 and then finally to the Courtesy/Reading lamp. When the light switch is depressed to the ON position, it provides power to the courtesy/reading lamp. Current flows through the lamp and then continues to ground (G200).

Power comes from the dome fuse, through junction block 1 and finally to the rear compartment lamp. When the rear compartment lid is opened the rear compartment lamp switch closes providing a path to ground (chassis ground). With ground and power supplied the lamp will illuminate.