Where is the oil pressure sending unit on a 1994 dodge ram 1500 4x4 5.2?

On a 1994 Dodge Ram 1500 5.2L (318 cubic inch) engine, the oil pressure sending unit is typically located on the passenger side (right side) of the engine block, near the front. It's usually a small, relatively low-profile sensor with one or two wires connected to it. You might need to look closely and possibly use a flashlight to locate it. It's often near the oil filter, but not always directly on it.