Review on Tekonsha 3063 Harness by Patrick Diaz

Amazing. The first true plug and play device I've added to my Sprinter. Pull the driver's seat (careful with the wires, you may have to reset the airbags if you disconnect them) just enough to dig underneath for the mating green connector. Plug it in, thread the other end through the existing hole and under the floor mat to the dash. Is working. One caveat: the Sprinter's harness connector is always "live", meaning it's always on when your controller is plugged into it. Plan to turn it off every night or install a kill switch. but that's a ring for Mercedes, not Tekonsha.