Try 68065016AB thats the repair kit.
But look up this website and search your year and jk wrangler, then you can narrow down to “turn signal”
I searched turn
http://connectors.dcctools.com/results.htm
I used this to help track down a plug for my cam sensor
Mouser electronics or ummm element13 do supply plugs and stuff too if you have the manufacturer and part number of the plug, sometimes stamped or marked on or within it.
Otherwise jeep with the repair number, but that could be expensive. Wreckers may be the cheapest bet to cut one out with a length of wire attached