I have a system in my bathroom that was causing a flicker in one of my lights, so I investigated and found a wiring setup that I was unfamiliar with, so I thought that it was the cause of the problem. I think it was the problem because with some modifications, the light stopped flickering. However, now I have a burning/fishy smell, and I had to remove part of the system from two 2-gangs to one 2-gang, and I can use one of my lights and my bathroom fan.
I have two 2-gang boxes on the same 15A circuit. One 2-gang has source in/through and is two switches for 3 lights (a single and a pair of pot lights). The power then continues to charge the other box, and this is where the fun begins.
Originally, the power continued through the first box and went up to a ceiling light that functioned as a junction box where some complicated wiring lead to two cables that were charged going to box and powering the switch. There were only two cables, and not 3, for the two switches, so no source specific cable going there.
I changed it by adding a source cable from the passthrough of the first 2-gang. Now the second 2-gang has 3 cables going in. This is when I got a strong fishy smell.
So, I am wondering what my problem might be. I was thinking that it might be because I have two boxes that are internally wired in parallel that are powered in series. So, I was thinking of passing the source from the first box directly through without powering the first box, running it to a junction box, and then powering both 2-gangs from there directly. But before I potentially cause a fire or damage more switches, I thought I would ask around for advice.
Thanks for any suggestions or insight!