I am confused with your description. Is this a 120VAC receptacle or a 12vDC Socket.
If it is a 120VAC receptacle it is most likely one of those pinch wire receptacles. These have the hot wires pushed into a knife slot which cuts through the insulation and touches the copper portion of the wires. These are almost one time use receptacles... If you move the wire that has been creased by the knife it may break the wire into..
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You also should check the GFCI receptacles and make none of them has not tripped... These are the 120VAC receptacles that has a push button in the center of it... One being tripped may also kill power to several other ones down the same line.
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My big trailer has three of these inside the trtailer.... My POPUP has only one...
Roy Ken