Not sure then. I looked back at the thread I found regarding someone having the same issue as you. Turns out it was you that posted it! So i think this issue is unique to you as far as I could find.
I would expect all the lighting wiring to run next to each other so would also think you would have gotten noise when you used your blinkers or the reverse lights came on.
If you ran the wires under the carpet you will never see them so not really a big deal where you laid them, I would just leave it tbh.
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