Where is the oil sending unit on a 2005 dodge magnum?

The oil pressure sending unit on a 2005 Dodge Magnum is located on the engine block, near the oil filter. It's a relatively small unit with one or two wires connected to it. You'll likely need to consult a repair manual or online diagrams specific to your engine (e.g., 2.7L, 3.5L, or 5.7L Hemi) for the exact location as placement can vary slightly depending on the engine type. The diagrams will show it clearly.