Are lights in a hall or stairwell acting strange? Perhaps you get more exercise than you wanted because you have to run up and down to get your lights to turn on. If this is the case, it could be that your three way switch has been wired incorrectly. You can count on the McClish Team Home Inspections to point out these sort of inconveniences. Here Jesse, one of the McClish Team’s home inspectors, shows you how to identify a three way switch malfunction.