>  On a related question, does the fan run when
> driving and using the fridge in the dc mode?

The fan runs when the little thermoswitch attached
to the top of a fin says to come on.  I believe
it is 126 degrees F.  It turns off when the fin
temp drops to  108.  The original fan is 0.6W,
according to the manual.  See:
http://www.vanagon.com/info/articles/Refrigerator/Files/RM182B_Manual.pdf

So on a really cooking day in the desert, the fan
might come on even if the fridge was not running.
In my van, it only comes on when the fan is running
and it is hot outside or that side of the van is
in direct sunlight and getting very warm.

                        Richard A Jones
                        Boulder, Colorado