Interior Lamp Defeat Switch

The Interior lamp defeat switch is part of the headlamp switch. When the
switch is closed, it connects circuit M1 and circuit M11. Circuit M11
powers the time delay relay which supplies voltage to the headlamp switch lamp and ignition switch lamp. Circuit M11 also splices to left and right door courtesy lamps.

Circuit M11 also splices to supply power to the M1 circuit that connect to the front dome/reading lamps, visor vanity mirror lamps, dome lamp, rear dome lamp, and side door courtesy lamp.