T Harness for 2016 to 2021 ProMaster Vans & Jeep Wrangler JL 2018 and Up.  The TH Ram is the easiest and fastest way to install your PA 62 or PA 64 into ProMaster and Jeep JL with factory stereos.  It’s a no cut, plug and play installation, perfect for remote areas without technical support, speed up the install for dealers and installers and reduces labour cost for vehicle manufacturers.