How to disable propane >> Yeah another fridge topic.

Turning it off/on at gas stations is what everybody forgets ;)
I am not worry about it too much with present setup as TC fridge is on opposite side and much higher than my diesel cap, so unless I find easy way to do, I will continue filling up with flame under fridge.
Coming to pulling a lead on igniter, shouldn't that activate warning light on the panel?
Would I disable panel, the fridge will not work at all.