DETROIT – Ford is recalling more than 700,000 vehicles in North America because the backup cameras can show distorted images or suddenly go dark. The recall covers most 2020 versions of Ford’s F-Series trucks, as well as the 2020 Explorer, Mustang, Transit, Expedition, Escape, Ranger and Edge. F-Series trucks are the top-selling vehicle in the U.S. The company says in documents posted Wednesday by the U.S. government’s National Highway Traffic Safety Administration that a poor electrical connection is causing the problem. Ford says it doesn’t know of any crashes or injuries caused by the problem.