Where is the oil pressure sending unit on a 2000 dodge ram 1500 with 5.9 engine?

The oil pressure sending unit on a 2000 Dodge Ram 1500 with a 5.9L engine is located on the driver's side of the engine block, near the front. It's a relatively small unit, and often tucked in a bit, so you might need a flashlight and possibly even a mirror to get a good look. It's usually threaded directly into the engine block.