Done some thinking overnight. The measurement taken in my picture are all both taken with the circuit breaker open, shouldn't there be a 12 Volt difference between the two sides of the breaker then? And there should be an infitite amount of resistance between them, right? Must be a short between the battery and the breaker, right?
Also, does anyone know how the brake testing button is wired in and the purpose of it? Is the fuse "upstream" or "downstream" of the breaker?
It's a 2009 Duratec 175.