I would also highly encourage you to look for some resettable fuses in the 1 to 5 amp range. If you have something shorted out you can run through a pile of fuses before you find the short.
I have these resettable fuses set up with alligator clip leads. Just clip onto the fuse holder with the fuse removed for diagnostic work until you find the short. I just found them randomly on ebay and at garage sales over the years.
I have found them in 1, 1.5, 3, & 6 amp. I am sure they are not perfectly calibrated, but they beat having to go through a dozen fuzes to find a light socket that has shorted out or a bad coil.