No wonder it’s dead

We went to bed last night knowing our water pressure was dropping (which, as we live ‘off grid’ means it’s up to us to sort it). In the morning I verified that indeed the tank was empty but leaks were not the problem. When I got in to the wiring for the pump I batted around a bit with a screwdriver and was relieved to see a loose wire (can you spot it?) saving the need for getting ‘professionals’ involved (even though it was one of ‘them’ that had neglected to tighten the connection!)