* In the front of the engine compartment: This is the most common location. Look near the driver's side of the engine block, often near the lower portion. The cord may be dangling, or tucked neatly away with a retaining clip. It's usually a heavy-duty cord with a weatherproof plug.
* In the driver's side fender well: Less common, but some Excursions might have the cord routed through a grommet in the driver's side fender well. This would allow access to the plug while keeping the cord somewhat protected from the elements.
If you can't locate it in either of these places, you can consult your owner's manual. It should have a diagram showing the block heater's location. You can also try searching online for "Ford Excursion block heater location [Year of your Excursion]" to find images or videos from other owners. A picture of your specific engine bay could also help someone with experience identify the plug if you are having trouble.
