To be certain, you should:
1. Consult your owner's manual: This is the most reliable source. The manual will have diagrams showing the location of all components.
2. Use a repair manual specific to your year and engine: Chilton's or Haynes manuals are readily available and have detailed diagrams and instructions.
3. Search online for a diagram: Search "[Your Dodge Dakota year] [Your engine size] serpentine belt diagram" on Google Images. This will give you a visual representation.
Be cautious when working near the belt tensioner. The belt is under tension and can cause injury if not handled properly. If you're not comfortable performing this task yourself, it's best to have a qualified mechanic do it.