WIRING A DC OUTLET

I have a 3124KB.  I want to add a DC outlet next to the kitchen stove, wired to a vacant 15A circuit on the converter.  Does anyone know how to get the wire from the converter, to the rear storage compartment, then to the compartment under the bed. From here the job would be easy.  I am concerned about damaging something in one of the intervening walls.  I believe that the wall between the outside storage and under the bed has metal in it.