Matt Brickell wrote:
> ...I switched it to the 12v setting and have seen heard felt no results.

It takes an hour or so for you to see results on my fridge.  I would
plug it in to 110 volts AC in your garage or driveway for an hour or two
then see if you get anything.  Or switch to 12 v DC if you are going to
drive some distance, (Hour or two) remember it is a relative cooling, so
if you are 95 degrees outside temp, dont expect ice cubes soon.It is
silent except for a cooling fan that won't come on until the coils get
real hot.