I put those on the weapons like the box shows. Some people use them to represent speakers in alt mode and put them on the leg. Your choice really.
my vintage SW has them on the legs, which is where the instructions put them, however the soundblaster reissue i put them on the weapons. That is where the instructions said to put them for the soundblaster reissue. The hasbro reissue which i just got, I am not sure what the instructions say since I have not had time to open it. I actually prefer them on the weapons. I think they junk it up in cassette player mode.
Did the original Soundwave come with a sticker chart, or just the pictures that have been shown here? I'm torn. I don't know where I want to put those two stickers.
They really shouldnt go on the legs. the type of tape deck soundwave is has speakers where the feet are. just look at the top corners in tape deck mode, where it says "L" and "R".
i always refer to the ORIGINAL original sticker maps, from diaclone and Micrichange. so, i put them on his batteries, like they are in Microchange.
I put my decals on the weapons. I imagined the red decals glowing bright red when the weapons are about to fire.