Mysterious 3rd set of wires

by user79399   Last Updated January 12, 2018 19:21 PM

I had to remove and reinstall a 4 gang box for my bathroom light switches. The problem is this 3rd set of wires that doesn't carry any power. Actually I think it's the problem. What is happening is the first 3 switches are for the lights and before each one worked individually. Now what's happened is switches 2-3 only work if switch 1 is on. Is this third wire causing the issue, cause I pigtailed it in at the same time all the switches were pigtailed in.enter image description here

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