Almost all online help (OLH) "best practices" and solutions seem designed exclusively for software and assume that the tasks will be performed directly on a computer. Now, what about help for field installers of complex systems built from physical hardware components? These components form the building blocks for several distinct higher-level solutions.
Installation technique can be crucial, and the installers vary widely in terms of expertise. Sometimes, conceptual or engineering knowledge is required to make adjustments in the field. It would be great to include animations but have it integrated with other media types. Installers may have limited English language skills. Search features might need visual matching. Sometimes, the same hardware component has different usages depending on context. And, a subset of users/readers might be looking for engineering details or regulatory information.
My particular application is a patented rooftop mounting system for solar PV arrays, but other examples could include repair for specific high-end automotive brands, or military equipment field guides.