明かりを

the light (as the object of an action)

→ 明かり
phrase Common #6,623
the light (as the object of an action) Refers to a light used for illumination, such as an electric light; を marks it as the object.
JA: 寝る前に明かりを消してください。
EN: Please turn off the light before bed.

ポニョ明かりをお願いします

Ponyo, could you turn on the light, please?

— 崖の上のポニョ (2008)

明かりをつけ

Turn on the light.

— ワン・バトル・アフター・アナザー (2025)

暗いから明かりをごゆっくり

It’s dark, so please take your time with the light.

— オールド・ボーイ (2003)

寝る前に明かりを全部消すのを忘れないように。

Don't forget to turn off all the lights before going to bed.