DNA Robotics
- Joined Jun 13, 2014
- 647
My first impression: If the one circuit went dim, someone may have wired it to another working circuit just to make it work. If that is the case, you may see a Romax wire that looks out of place in the attic or basement. (newer or different color than the rest)
As others have said, it may be a neutral wire.
A Fox & Hound signal tracer may come in handy.
As others have said, it may be a neutral wire.
A Fox & Hound signal tracer may come in handy.