The fuse on my Contessa is in the front electrical panel, but I don't remember what number it is. I just had to replace my controller for my front steps. It's just as easy to check the power by disconnecting the 4 prong connector under the steps and checking for 12volt. I could actually hear the connection being made in the brain, but it didn't make the steps move. another thing to check is the magnetic switch in the door frame. It should have continuity when the door is closed.