Air Con Under Dash.. Main Part of AC conversion Need NEWThis under dash AC system component is designed for the cabin side, not the engine bay. Its particularly useful for right hand drive vehicles requiring air conditioning without extensive modifications or off the shelf conversion kits. In the 1970s, this style of system was commonly used for retrofitting air conditioning into cars that originally lacked it. Click the image to view details more clearly. Shown here is the head unit.. it's whats provided.