- Ma'am, you should reprogram. It's dangerous to enter without lights on.
- Lights on?
- Yes.

5 seconds sound clip from the Back to the Future Part II movie soundboard.

You can hear this line at 00:27:41.752 in the Blu-ray version of the movie.

Quote context

[...]

- So, Doc Brown invented a time machine.

(Flying police car landing)

- Hilldale. Nothing but a breeding ground for tranks, lobos and zipheads.

- Yeah, they ought to tear this whole place down.

- Welcome home, Jennifer.

- You all right?

- Yeah.

- You got a little tranked, but I think you can walk.

- Ma'am, you should reprogram. It's dangerous to enter without lights on.

- Lights on?

- Yes.

- Now, look. Just take it easy and you'll be fine. And be careful in the future.

- The future?

- Have a nice day, Mrs. McFly.

- Broadcasting beautiful views 24 hours a day, you're tuned to the Scenery Channel.

- I'm in the future.

[...]