> I think it is for the negative lead to the optional flame meter found in
> early years. The old flame meter uses the nearby spade on the top end of
> the thermocouple as it's positive lead. This positive lead is later used
> for the flame LED though many times here people have wrongly referred to
> it as a ground. Frank Condelli's Dometic writeup perpetrates this error.
> It is not a ground at all, but a positive voltage source for the LED
> flame indicator.
>

FWIW, fridge is back in, nothing connected to this terminal, and with it running on propane the led lights on the panel. It sure is nice to have the fridge fully functional now.      Jeff