Trailer Wiring Harness Installation - 2016 Ford Explorer May 12, 2016Today on our 2016 Ford Explorer we'll be showing you how to install the tow ready T1 vehicle wiring harness with 4 pole flat trailer connector, part number 118540. Our 2016 Ford Explorer here is actually a really simple job to install trailer wiring. We have this quick connect harness here that plugs directly in line with the factory tow wiring on the passenger side of the vehicle.4.9/5(235)Category: Custom Fit Vehicle WiringBrand: Tekonsha 2016 Ford Explorer Trailer Wire Harness and Connector Equip cars, trucks & SUVs with 2016 Ford Explorer Trailer Wire Harness and Connector from AutoZone. Get Yours Today! We have the best products at the right price.