16Sierraowner

Are these harnesses still an option? I bought my 2016 a couple years ago, and immediately ordered tow mirrors. I have the SLE model, and the tow mirrors I bought offer turn signals / marker lights, along with the clearance lights. Attached is the picture of the ones I have, and I’m just wondering if you offer a plug and play harness for this to at least utilize the functionality of the turn signals / running lights.