To find the correct bulb, you need to:
1. Consult your owner's manual: This is the best resource. It will list the bulb type and wattage for each light in your Caravan's taillights.
2. Check the bulb itself: If you can access a burned-out bulb, the bulb type will be printed on the glass.
3. Look up your vehicle online: Many auto parts websites (like AutoZone, Advance Auto Parts, or Napa Auto Parts) have online look-up tools. You input your year, make, and model (2000 Dodge Caravan), and they will show you a diagram of your taillights and the corresponding bulb types.
Without knowing the specific light you need to replace, it's impossible to tell you the correct bulb type. Don't just assume all the bulbs are the same.