I just had the converter replaced in my 5th wheel. The new one is latest and greatest solid state model. :-laf However with no load on in the 5th the voltage is 13. 7. If I turn on 1 light the voltage drops to 10. 5. If I continue to turn on lights the voltage works it's way up to 12. 4. I called the Manufacturer about this and they said I had a bad ground. I checked and cleaned all of the grounds and it still does it. #@$%!Does anyone have any experience with these things.