I have run my westfalia fridge, in my "non westy" (turned westy) for a few
years now and loved/hated it. However, I've become quite a well educated
fridge user over this time. I have owned several thermometers and finally
found one I LOVE.
Finally one that's just a big display showing Inside and Outside
temperature. Nothing more, nothing less.

I have purchased 4 of these units and are running them on several boat
fridges with great success.
http://www.amazon.com/gp/product/B002JM0DDG
$20, shipped (second day) if you have amazon prime!
There are built in magnets on the display unit that stick right to the
westfalia panel (or you can put it on the dash if you want to monitor while
driving).

Check it out guys.
Finally a product I have found to be a great success.
I have only tested it for two weeks, But I love the fit, the finish, and the
price.

-Craig
'85GL turned WESTY
BOSTIG in the back
'87 SUNROOF Syncro
(Now sittin on 16's!!!!)