I finally discovered why my BC23A is not working. I used to have this hooked up via cigarette lighter cord; however, it stopped working. Later, I found this very small fuse link. I am going to have to get an electron microscope to read the size of fuse this takes. Since I don't have one of these at my disposal, does anyone know what size of fuse this speaker takes so that I can purchase a normal size fuse to install inline.