Today on our 2016 Mercedes Benz Sprinter 3500, we're going to be taking a look at and also showing you how to install the Tekonsha T-One Vehicle Wiring Harness with the 4-Pole Flat Trailer Connector. The part number is 118649. Now, this is what our kit is going to look like. This kit is going to offer us a direct plugin solution to get a working 4-pole trailer connector at the rear of our vehicle.… see more >