On the 2nd Gen 600, all four signals have different part #'s, mostly due to the length of the wires, which are different front to back. I was surprised.
At least the 06/07 Bandits have the "flexible" mounts. I've broken 4 signals on my '02, 3 of them in the garage when I "bumped" them, moving stuff around.
I building up a nice box of spare parts, but I always break the same part of the mount. I've got lots of spare lenses now, but never broken one... Sheesh...