The 5.0L Coyote engine in Ford trucks (and Mustangs) is a
V8. Therefore, the cylinders are arranged in two banks of four, in a "V" configuration. They are numbered sequentially, typically starting from the front of the engine on the passenger side (right side in the US) and continuing from front to rear, alternating banks.
To be precise about the *location* within the engine block requires a diagram, as simply saying "bank 1, cylinder 1" isn't fully descriptive without a visual reference. A quick Google image search for "5.0 Coyote engine cylinder layout" will give you many diagrams showing the exact position of each cylinder.
