Find a Camping World along your route. They can instal it and test the system for you. There are two in Atlanta.
It should be so easier if I could, but as mkirsch said, the truck camper stay in France.
I did every think you said to try.
I come in USA in one month.
If I have to buy a Thermocouple, could you recomand me a dealer somewhere between Atlanta and San Francisco.
Do you think the pictures will be enough for the dealer to give me the good thermocouple?