This document summarizes the components, costs, manufacturing processes, difficulties encountered, and solutions for a second prototype of a wind vane device for a motorcycle. The components are a vane, circuit, and battery holder made of plastic, mild steel, and copper at a total cost of 89 Bath. Manufacturing includes cutting, welding, drilling, and assembly. Difficulties in installing on the motorcycle and sourcing steel pipe occurred. The solutions for a second prototype are to study other devices, edit the existing design, and reuse pieces.