Hyundai Accent Spark Plug Wiring Diagram - In order to flat-tow a 2019 Jeep Cherokee Trailhawk you are going to need a base plate kit, tow bar, safety chains, flat-tow wiring, a supplemental braking system, and a possible high-low adapter. I have attached my recommendation on the following parts for you below. Base Plate Kit: Roadmaster EZ4. We recommend Torque Pro. What Does Code P0172 Mean? Your engine needs to put in the right amount of fuel for the amount of air coming into it, that is, the proper air-fuel ratio, to deliver the best power and fuel economy..