Is it possible to use electric light in a regular custom history?

[str4wberrypanic]

Frictional Games released a game named Penumbra. It was released before Amnesia, and it do have what you want. You just have to import the entities from Penumbra to Amnesia. But since i don't know how to import things from Penumbra, i've taken entities from another modern stories, like White Night, one of the most known stories around here.

Edit: About your question, it's possible. You put the lamp in the editor, a pointlight in the room and then, something to light it, like a lever. This lever will activate and deactivate the lamp.