Wiktionary
idiot lights
n. (idiot light English)
Usage examples of "idiot lights".
The fire control panel's idiot lights were almost all green, Kinsman saw.
The idiot lights on its dashboard flashed in crazy patterns, then went to black.
This was a deluxe job, with soft upholstery and bright metal fittings and more dials and idiot lights than a late model Detroit status symbol.
Warning tones and overhead idiot lights came on as the cabin crew began the mostly orderly evacuation of the plane.
The bank of idiot lights above the targeting console had a streak of red and amber with a green expanse: the traversing mechanism failed regularly when the turret was rotated over fifteen degrees to either side.