speed limits

Hello! I'm making my custom "speedbox" and i need the speed sensor connector (male and female). Can i buy that somewhere (ali, etc). Thanks))

It's interesting how this article is written. It says EBIKES will face speed limits. But, actually, everyone on the trail will have the same speed limit, not just ebikes. I don't understand what's new here, because one of the major trails discussed already has posted signs that say 15mph...