There isn't a single, universally located "emergency shut-off switch" on a 2001 Dodge Ram 1500 like you might find in some industrial equipment. The best way to stop the engine in an emergency is to simply
turn the ignition key to the "off" position.
If you're concerned about a specific emergency situation (e.g., a fuel leak, fire), your best course of action is to get away from the vehicle and call emergency services. Trying to locate a non-existent switch could put you in greater danger.
