definitely. been there too many times. if you don't find the short, you're just going to go thru more fuses, though. try to start with the most likely places you might have a bare hot wire contacting a metal bike part, as this has been the culprit every time for me. pinched one and broke the insulation without noticing, or left a tiny bare spot in a splice, etc. here's hoping it ain't up in your bars! (i'd look around splices and switch housing first, probably)
the blown fuse is likely the one for where ever you tapped into power supply.