idiot light

On the dashboard "idiot lights" were used to monitor oil pressure and electrical charge rate instead of gauges.

The rows and columns of idiot lights looked like Christmas.

A single idiot light blinked at him briefly and stayed out.

He stared at the row of green idiot lights, all brightly assuring him that the gear was still operational.

Fuel read "full" and all the idiot lights showed green.

"It's like replacing a temperature gauge with an idiot light."

"The idiot lights are for all of us," Mr. Alexander said.

He sat behind the wheel a moment, staring stupidly down at the red idiot lights.

He surveys the idiot lights on a long board, points to one of his men.

The verniers told me nothing, being little better than idiot lights.