That depends on who wired it up. The factory wiring path feeds the
fridge 12 volts from the dash fuse/relay panel. That means the fridge is
subject to low voltage conditions all the time and more so when there is
a drain on the main panel from other things. Rewiring the single power
feed wire needed by the fridge on 12 volts to a shorter path not shared
with heavy consumers results in a higher voltage at all times and even
more so under load conditions. It can make a big difference in fridge
performance on the 12 volt setting. The fridge can ice up the fins
running on 12 volts. Mine all have.

The logical time to correct this wiring flaw is when adding an aux
battery setup. The GoWesty wiring method falls short in this regard, and
others.

Mark

Jim Felder wrote:
>.... 12 volt pretty much sucks, it just doesn't get the dometic
> as cold as gas or 110. Try it on a hot, rainy night with the wipers
> going and the big Hella going up front and there ain't enough juice to
> run any of it, much less all of it!
>
> Jim
>
> On Wed, Jul 11, 2012 at 4:44 PM, Jamie Fitterer <fittdog8848@hotmail.com> wrote:
>> SO I am guessing that The GW Aux battery Kit does not switch this over for
>> use when NOT driving.
>>
>>
>>
>> I also did plug in the night before and get it nice and cold, but nothing
>> while driving.  So maybe it is operation as normal.
>>
>> LOL
>>
>> Now i just need to get the gas working
>>
>>
>>> Date: Wed, 11 Jul 2012 16:39:17 -0500
>>> From: jim.felder@GMAIL.COM
>>> Subject: Re: fridge on dc power
>>> To: vanagon@GERRY.VANAGON.COM
>>
>>>
>>> Correct. After about a tank of gas, the fins should be cool to the touch.
>>>
>>> : )
>>>