Edit: Solved! See below.
I was just doing some wiring on the capped off accessory connector at the left rear under the pillion seat. That's the one shown in Step 6 in these alarm install instructions.
The hot lead hit the ground and I heard a fuse pop. Turned on the bike and everything works except for the blinkers. Unfortunately I can't find the blinker fuse; it's not in one of the three main fuse packs. I would think the fuse would be the one marked "OP" (optional power), but that fuse looks okay.
Can anyone help me out? I would like to finish this project... :grin2: