If you are referring to the single 12 volt cigarette lighter style plug on the dash that is controlled ba a 30 amp maxi fuse.
It is located in the driverside engine compartment fuse box . I will try and send you a picture of it but we are camping now and the cell coverage is spotty .
If you are referring to the USB style charging ports they are controlled by a fuse which is located in the fuse box that is in the compartment behind the drivers front wheel. Same compartment that houses your living room slide control box if you have a 24.1 which is what I have.
That fuse is marked as 12 volt accessory .
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