A range of in line Automotive fuse holders for In Car Audio systems. These include AGU, ANL and Blade Fuse holders. A fuse holder must always be fitted at the battery end of the amplifier power supply. It should be fitted within 450mm of the battery. This fuse is to protect the car and passengers from a massive short circuit that would be caused in a vehicle accident. The fuse rating should be enough to cope with the maximum current draw from the amplifier or amplifiers but should be less than the current rating of the cable.