I added the front parksense to my 2016 2500 tradesman today. My truck came from the factory with rear parksense also. If your truck was like mine, the wiring for the front parksense will already be in place. If you look under your front bumper on the drivers side, you should see a six pin connector mounted there. There will be wires on one side of it and none coming out the other. I replaced my whole front bumper with one from a Laramie, which had fogs and the parksense in it. Got it from a salvage yard for less than $500. I just plugged the connector from the new bumper into the existing wiring connector that was there but not used.
You will also need to change the button panel and the parksense module. Each were around $75. The parksense module is located behind the drivers side kick panel. The other end of the six pin connector was taped up there by the parksense module.
It does seem to work, but I am not sure if it is working like from the factory. When I get close to something with the rear of the truck, I get a little truck icon on my evic with some markings letting me know how close I am. With the front parksense I don't get this, I just get an audible alarm that gets louder as I get closer to something. Can someone with factory front parksense kind of eloborate on how it works and what you see?