To be absolutely sure, you should:
* Consult your owner's manual: This is the best place to start. The manual will have diagrams and potentially specific instructions.
* Use a repair manual: A Haynes or Chilton repair manual for your specific year and model will give you detailed information and diagrams showing the location.
* Search online forums: Search online forums dedicated to Dodge Ram vans. Someone may have already posted a picture or description of the location.
Important Note: Working on the airbag system is dangerous. If you're not comfortable working with automotive electrical systems and potentially explosive devices, you should take your van to a qualified mechanic. Disconnecting the battery negative terminal before working near the airbag system is crucial for safety.