Where is oil sending unit on a 2004 ram 1500 4.7 liter?

The oil level sending unit on a 2004 Ram 1500 with a 4.7L engine is located on the oil pan. It's a small electrical sensor, often screwed into the side of the oil pan itself. You'll likely need to get under the truck to see it. It's not always easily accessible and might be somewhat hidden depending on other components.