These are the ones I purchased.
https://m.ebay.com/itm/For-14-18-Silverado-Sierra-Towing-Mirrors-Power-Heated-Amber-LED-Turn-Signals/282158064794?_mwBanner=1
and I will check the plug this weekend an get back to you. Thank you for the quick response.
So if I purchase your harness all I need to do is remove the original an run yours an that’s all no crazy splicing etc. I have a 2015 LT I purchased after market tow mirrors with no power fold or Extended or memory function. I had the DL8 mirrors from factory