The brake switch is operated when the pedal is depressed. This switch is just below the steering column. When the switch is closed, power flows to the brake lights, and to the shifter solenoid. If the solenoid is faulty, when you step on the brake pedal,it blows the fuse, and no brake lights, no get car out of park. The solenoid is somewhere else, and prevents shifting out of park unless the brake pedal is depressed.Is brake shifter interlock solenoid also called brake switch? Or totally different?