I really don't get fuses and ratings and all that stuff. Was checking a few things today when the the curiosity in me got thinking . As a test I just tried to see what amount of current circuits actually drew compared to the rating of fuse that's there. For instance I took out the fuse for the reversing lights and put a meter on there and put on the ignition and the meter read about 3 amps, when the fuse in there is 15amp. Done the same with the left headlight and meter read 3.5 amps and again 15 amp fuse. Why is there such a gap between the two figures??