The comp light will turn on but will not go out. This is controlled by the starboard switch pad. This is a push button type of on/off, it has a green light that is on when the light is on. When pushing the button the green light will blink and the light in the comp will blink but it will not go off. There is also a clicking in the forward EIM, hopefully this is not bad. I can turn the light off by turning the battery selector switch to off then when I turn the selector switch to on the light will stay off, until someone hits the button again.