Ford Focus 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. 2018 Ford Focus Trailer Wiring | etrailer Call 800-298-8924 to get Expert Service ordering a Trailer Wiring for your 2018 Ford Focus. Complete installation instructions and lifetime technical support on all Trailer Wiring purchases. Lowest price guarantee on accessories for your Ford Focus and the fastest shipping available.