Where is the oil sending unit located on a 1991 dodge dynasty?

The oil pressure sending unit on a 1991 Dodge Dynasty is located on the engine block, near the oil filter. It's a relatively small unit and often has a single wire connected to it. You'll likely need to get under the car to see it clearly. Because there are several variations of engines that could be in a 1991 Dynasty, the exact location might vary slightly, but it will always be in that general vicinity.