Today on this 2008 Dodge 3500 we are going to install the Tekonsha P3 brake controller, part number 90195. Our first step is going to be locating where you want to mount your brake controller. For this application, we are going to mount it right here. One of my mounting fasteners is also going to be one of the current trim fasteners. So I will go ahead and remove that first and install my mounting… see more >