Because of its location and the variations in automatic vs. manual transmissions, you'll likely need to consult a repair manual specific to your 2005 Dodge Stratus's transmission type (automatic or manual) to pinpoint its exact location. A picture diagram in the manual would be extremely helpful. You could also search online for diagrams specific to your vehicle's year, make, model, and transmission type.
Accessing it might require getting under the car. Remember to disconnect the battery's negative terminal before working on any electrical components.