Alright, so I mounted all of the lights except for the rear turn signals. The width of the thread portion is nearly 10mm so they're too large for any mounting hole near the rear of the bike.
I went to the hardware store to look for some brackets with bolt holes large enough for the turn signals, but didn't find anything big enough without it being way too big for the bike. I might end up just drilling a larger hole in some of the mounting holes to make the signals fit.
Any ideas?