How do I locate the Oil Pressure Sending Unit on an F-450 Diesel?

To locate the Oil Pressure Sending Unit on a Ford F-450 Diesel, first, open the hood and look towards the engine block, typically on the driver's side. The sending unit is usually found near the oil filter or above it, connected to the engine with a single wire and a threaded fitting. You may need to remove some components for better access, such as the air intake or wiring harnesses. Always ensure the engine is cool and the battery is disconnected before attempting to reach it.