* Consult your vehicle's repair manual: This is the best source of accurate information specific to your van's year and model.
* Use an online repair manual database: Websites like Chilton or Haynes often have downloadable repair manuals for a fee. You'll need to input your van's year, make, and model.
* Search online forums: Search for your specific year and model of Dodge 250 van along with "wiper motor location" on forums like Dodge forums or general automotive repair forums. Someone may have already posted pictures or descriptions.
Accessing the wiper motor typically requires removing parts of the dashboard or cowl. This can be a moderately involved task. If you're not comfortable with auto repair, it's best to take your van to a qualified mechanic.