Very Good, continuity test done on them in the built in fuse holder (Scosche 0400ATCFH16-5 ATC 16 gauge 5 pack fuse holder) and they work. So far, so good. I also made a video of them and the Scosche 0400ATCFH16-5 ATC 16 Gauge 5 Pack fuse holder. Here, look? v=mDaZ8tCbUfY I also attached 5 high quality pictures.