So I went to Grandma's tonight for a visit. When I left, I went to put my turn signal on at an intersection in town, and I didn't hear the clicking. I looked down, and there was no flashing on the dash.
I got home, dug around at the fuse box, and found that my turn lamp/back-up lamp fuse had blown. Dad suggested that it was from my license plate wire being undone, and that I knew about it.