The number needed to look up information about an RV, including any recalls. For Class Cs, the VIN is usually in the same place as on a car or pickup truck, below the driver’s side windshield on the outside. In Class As, the VIN is usually located on a sticker on the inside wall, next to or behind the driver’s seat. For fifth wheels, the VIN is most likely located on the front lower exterior wall on the roadside or along the framework of the pin box. On a travel trailer, the VIN is on the front lower exterior wall on the roadside, along the frame, along the tongue, and inside exterior compartments or interior cabinets. The VIN should also be on your insurance card and registration.