If Cable & Harness is not installed on the system, viewing the harness data, the harness subassembly, and all that it contains is read only. The geometry of the harness components is visible through Autodesk Inventor, but you cannot edit the components, and you cannot add new cable and harness components. However, you can edit electrical parts and move pins, but electrical part properties are not available.
When the Tube & Pipe add-in is not installed, there are limited tasks you can perform with the cable and harness data