Be very careful hooking up electronics to the 12 volt side of your converter.
While camping last year we charged our cell phones on the 12volt side of our
Casita and burned both of them out.
I checked the 12 volt outlet and found 27 volts of Ac on the 12 volt side.
I am in the process of replacing both of my Parallax 6300 series converters.
The 7400 series has good ac filtering so you don't get ac in the dc circuit.
Harv in Colo.