Platformer Maintenance

This looks like a platformer, but you can't control The Guy. 
Instead, you must finish the electronics of some levels so he can reach the end.
Use your mouse to draw cables and connect, for example, a button to some switch blocks, so The Guy can make them transparent, walk through them, and reach the door.

This is but a small game concept, with 8 easy levels that are meant purely to showcase the basic mechanics, and only the last level should give anyone any trouble. 

I appreciate greatly any feedback and opinions! 

I hope you like it.