How To Fix A Blown Fuse In A Car. 6 test your new fuse. A blown fuse is quite easy to recognize.
A blown fuse will be black on the inside with a melted metal ribbon, and the glass encasing might be cloudy. A blown fuse will show voltage on one side, but zero voltage on the other side.
A blown fuse will usually be dark and or has a broken metal inside. After taking out the cover, a wide range of numbers, wires and buttons with different colors will be displayed.