2013 Ford E350 Super Duty Trailer Wire Harness and Connector Equip cars, trucks & SUVs with 2013 Ford E350 Super Duty Trailer Wire Harness and Connector from AutoZone. Get Yours Today! We have the best products at the right price. 2013 Ford Trailer Wiring | etrailer Trailer wiring from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, and Hopkins eliminates or reduces the need to cut and splice wires. It also helps to protect your vehicle's sensitive electronics from mis-wired trailers. Choose the year of your vehicle to the left to find a custom fit trailer wiring harness.