Because its exact placement can vary slightly depending on trim level and specific options, it's best to:
1. Consult your owner's manual: This is the most reliable source of information for your specific vehicle. It will show a diagram or give precise instructions.
2. Look carefully in the front of the engine bay: Once you've popped the hood, examine the area near the radiator and the driver's side of the engine. Look for a heavy-duty cord that's different from other wiring harnesses.
If you can't locate it after checking these places, a Ford dealership or a trusted mechanic can quickly point it out for you.