* Factory-installed: If your Excursion came with factory-installed trailer brakes, the connector is usually located near the rear bumper, on the driver's side. It might be tucked up somewhat, possibly under a small cover or flap. Check carefully around that area.
* Aftermarket-installed: If the brake controller was added later, the location is much less predictable. It could be virtually anywhere accessible near the rear of the vehicle, such as:
* Under the dash: While less common for the actual *plug* connecting to the trailer, the wiring harness often runs under the dash.
* In the rear cargo area: Sometimes, installers place the plug more conveniently in the cargo area for easy access.
* Near the spare tire: This is another possible location for an aftermarket installation.
You'll need to visually search the areas mentioned above. Look for a 7-way or other multi-pin connector that looks like it's designed to connect to a trailer harness. If you can't locate it visually, consult a wiring diagram specific to your year and model Excursion. A Ford repair manual or online forums dedicated to the Excursion would be helpful resources.
