I’m not sure, I looked at some kits Online and some still showed the switch being included with the kit. You may be able to find the kit or the switch on alibaba. I would assume that is where most of the sellers are getting their parts from
There is a yellow up by the relay and a yellow that runs across the bottom going to the passenger side. They are not connected when you get the harness. I’ve you run the wires you will connect them to each other.