2012 Ford Focus Wiring - Engine And Transmission FordPartsGiant offers the lowest prices for genuine 2012 Ford Focus parts. Parts like Wiring - Engine And Transmission are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl Ford Focus Wiring Harness | Auto Parts Warehouse Let the people with 12+ years of experience in finding and buying car parts help you find the best Wiring Harness for your Ford Focus. We here at Auto Parts Warehouse want to make sure you're happy with your car part purchases. We know you love your Ford Focus and want to make sure it's taken care of (maybe he or she even has a name?).