How do I trace romex behind drywall?

Sammy
by Sammy

I have two outlets in my garage that is showing a open neutral, the garaged is finished in drywall so the romex is hidden. I believe I hit a cable while installing cabinets. What’s the best way to find out where the romex runs without tearing apart my wall. All wiring within the effected outlet boxes appears to be okay.

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