I wont disagree with that method considering that's one of the ones I use. As many things that are in parallel in that circuit, I would unplug items before using a continuity tester. The total resistance may be low enough to give a false reading. I know it will on my Fluke. If there were fewer...
At this point, install a fuse and see if it blows again. The reason is, if you have a chaffed wire and you accidentally moved it while accessing something, you could have made the short temporarily disappear. If it didn't, keep searching. If it did, there's a chance the issue is in the area you...