Today on our 2009 Ford Focus, we will be installing the Tow Ready T-One Vehicle Wiring Harness with 4-pole flat trailer connector, part number 118457. All right, first thing we need to do on our Ford Focus to install the wiring harness is to open the trunk. Now what we want to do is go ahead and remove the taillight assemblies on both sides of the vehicle. The first step in order to gain access to… see more >