To find it, you'll likely need to look:
* Under the dash on the passenger side: This is a common area for the drain to exit the HVAC system. Follow the HVAC system components, looking for a small diameter hose exiting the unit.
* Below the passenger side of the dashboard (exterior): The hose then runs somewhere from under the dash to the outside of the vehicle. You may have to look carefully along the firewall and lower body panels.
* Near the floor of the vehicle: The drain hose will terminate outside the vehicle's body to allow condensation to drain away. This location could be near the front or somewhat to the rear, under the passenger area.
Important Considerations:
* Accessibility: You might need to use a flashlight and possibly jack up the van for better access.
* Appearance: The hose is typically a small, flexible, often black plastic tube.
* Condensation: Look for signs of water dripping or dampness to help locate the drain area.
If you're having trouble finding it, a service manual specific to your 1991 Dodge Ram B250 model will be very helpful. You can often find these online through various parts suppliers. A local mechanic experienced with older vehicles will likely be able to pinpoint it quickly.
