There is a hall with about 16 recessed can lights that aren't working. The voltage at the switch is good when on but when off there is a reading of 12 volts. After I tried a few things I cut the home run to check voltage and get 120v from the breaker and the other side of the wire I get 26v. There are 2 can lights coming from 8 j-boxes and other whips and pipe going to other misc. lights and devices. With this little of info does anyone have any ideas?