Players are reporting that the electrical boxes should not be connected until near the end of the quest.
Report the problem you are having to Pixel Support.
On your game screen, choose the Settings wheel in the upper corner. Write down your Player ID and then choose the Support button. Scroll all the way down to the bottom of the page until you see a list of categories. (Do not use the white text box in the top half!) Choose a category and then provide your Player ID, and problem details.
If on an iOS device, you might not see the category options on the SUPPORT page. In that case, you'll need to email them: firstname.lastname@example.org