Existing lights in 7 Days to Die?

I recently finally got the internet back & was able to update 7 Days to Die to the most recent of patches. While exploring I stumbled upon a bar with a lit “OPEN” sign and so as you do in these games I went to investigate. I get inside and there is a lot of working lights. Although, some are not on.

After a little google searching I find that there is now ways of getting working electricity, but if you wire it & such.

I was wondering if there was a way to get the existing ones to work. I mean half the building is on. Is there a way to turn on the lights that are not on?