9. Our new Hemi came with a sizable chunk of wiring. This is normally the most difficult part of an engine swap. In our case, getting the vehicle sensors and actuators wired correctly to the PCM was no harder than plugging in the connector with the corresponding label. Yes, you read right--the process of hooking up this mess was made simple by TeraFlex's wiring modifactions. The factory TJ harness, once returned from surgery, simply plugged right into the Hemi harness. No tedious wire splicing or late-night schematic sessions were required to make everything work properly.