Test each light separately.
Black Hot wire arrives at one screw on the switch. The Hot black wire going to Lights connects to other screw on the switch.
The White Neutral that completes the circuit to lights is connected with other white wires that are covered with wire nut pushed to back of box.
Open up light#1, and the Hot and Neutral arrive from switch box.
The Hot and Neutral going to lights#2-6 are also located inside light#1 box.
Check each wire for signs of high heat and burning. Check each wire if the insulation has been sliced, or cut short, or if copper is visible because wire nut does not cover wires correctly
http://waterheatertimer.org/How-to-select-right-wire-nut.htmlDisconnect Hot and Neutral going to lights#2-6, so switch is only turning on light#1.
Test if there is a short when turning switch ON.
Then repeat step, so switch turns on light#1 and light#2, but light#3-6 are disconnected.
If you need further help, I’m available over the phone at
https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
×