I'm not a pro electic, just basic knowledge with multimeter, so can you elaborate bit more, what should I look for ?
With my understanding - push defrost button - got 12v between two tabs of the defroster. Turn the button off - got nothing between the tabs. It tells me that power goes at least untill the tabs. Power at tabs = defroster should work.
Or am I missing something ?
Talking about these tabs. They are glued and fixed now
These two wires shoud be positive and negative, right ? If one of them is broken, multimeter should not show any voltage between them, when switch is on