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Green one is what I had (it was black), the white one was what I got.
The white one appeared to be a friction fit, it tool some gentle force to get it in. The cancel cam sent did not have the slot in it for the sleeve with the tab on it.
The cam was slightly different in where the cams were located. When reassembled my left turn signal gets canceled with tiny steering wheel movements.
Try the "Help" section. I got one of those pin/spring/retainer kits for about $5 at Autozone.
You push the retainer in and give it a 1/4 turn to lock it in.