Who told you that heater is only 15 watts? It is 70 watts and pulls ~7 amps.

Dennis,
From my phone.
________________________________
From: David Bjorkman<mailto:ddbjorkman@VERIZON.NET>
Sent: ‎6/‎2/‎2014 8:41 AM
To: vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.COM>
Subject: Re: Dometic fridge question

And the 12 V option only has a 15w heater, which will help keep it cold if it already was.  This is used while the Westy is in motion between campsites.  When you get to the next campsite, turn on the propane to chill it completely (or as best as it can do).  Can you tell I'm excited about moving from one campsite in a beautiful location to another campsite in another beautiful location?  Bring on camping season here in the great Northeast!!

Dave B.

On 06/02/14, Dennis Haynes wrote:

It will only work in that mode with the engine running.

Dennis,
From my phone.
________________________________
From: Andre Fiedler<mailto:fiedlerac@GMAIL.COM>
Sent: ???6/???1/???2014 10:47 PM
To: vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.COM>
Subject: Dometic fridge question

I have an 89 Westy with the stock Dometic fridge. When running it on the
12V battery option mode it does not seem to get very cold. I was wondering
what sort of temperature below ambient air temperature I might expect to
see?
Thanks.
Andre Fiedler