i all - Thanks for your replies to my seeking..
The result became like this.. I ended up finding out that the Control unit that I bought from Günzl Classic Parts in Germany actually works - I paid 406.-€ and there is 4 small buttoms on the back of the unit that need to be worked in right position -(look on the back of the old one..)
I found out that this unit actually is made for Cali from 96 and forward..
I then cut the hole in the roof dashboard a little bit bigger aprox 8-9mm all around and now its fitting perfectly.. The new unit also have a clock so it was perhaps okay to cut..
At least I´ve got a brand new that I know works 100%..
A guy on ebay wanted 360.-€ for a used original fitting but he couldnt guarantee me that it worked 100%..
I also found another one on ebay for 100.-€ - He didnt know if it was working at all -
So all came to an end - finding out that the fridge sensor was broken.. Probably that was the problem in the first place.. Here is a link to open and print a test scheme and knowhow.. Its in German, use Google Translate..
http://www.westfaliat4.info/WestfaliaT4CompessorFridgeControlWM.pdf
And if you need a sensor just right to Jonny from Dometic in Luxemburg, the price is aprox 25.-€ with shipping.. Here is his mail and just inform him that you are in need of a sensor for a Cali fridge - Sparepart reference number 296.9711.01 mail:
jonny.schildermans@dometic.lu
Can not post more than 6 URL´s (annoying) So I will just post the rest on second posting