It doesn't appear that there is any way that could rub the insulation that way. For some reason, mice tend to go for plastic. Rubbing doesn't leave chunks of wire like that. I know it is easy to demonize Keystone, but this may not be one of those situations. Good luck with the repair. Glad you caught it.
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Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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