The auxiliary motor kicks in automatically. 20 seconds and they're back in business.

7 seconds sound clip from the Ocean's 11 (1960) movie soundboard.

You can hear this line at 00:56:45 in the Blu-ray version of the movie.

Quote context

[...]

- What's my job?

- We need you to open the doors to the cashiers' cages, 'cause that's where the loot is.

- Those doors are controlled electrically. The cashier can open them by pushing a button from the inside.

- If the button's on the inside, I can't push it from the outside.

- But that's exactly where you're going to push it from. The outside.

- Every casino's got an auxiliary motor that generates enough power to light up the gambling tables and the cashiers' cages whenever the main cable fails, which happens quite often.

- The auxiliary motor kicks in automatically. 20 seconds and they're back in business.

- Except they won't quite be back in business on account of you, Tony.

- Let me ask you a question: What happens if you cross the wires that operate the lights with the wires that open the cage doors?

- When the auxiliary motor kicks in, instead of the lights going on, the doors of the cages will click open.

- It's as simple as that.

- Yes, in theory.

[...]