just finished add turn signal to my 2021 Zforce, I bought factory turn switch, flasher, and extra plug, same as front ones, machine came with two when I bought it. front was a piece of cake plug into front plugs that are already there. wire your lights into them, I used 3/4 micro lights up front, rear I located factory plug that goes into taillights, on the left side you will find a orange wire in the plug splice into it for left turn, this plug is a little hard to find as its more in the center coming across the back, right side the plug is easy to get to, its a blue wire, splice into it for right turn. The extra two wire plug you will see just past taillight plug its for license plate light I think, I plugged into it just for ground, and spliced ground from my added turn lights into green ground wire. As for the switch and flasher it was all just plug and go after dropping panel below switches. Indicators in dash even work.