I downloaded the Google Nik collection but they do not load onto Lightroom. I already have Efex HDR Pro 2 as a plug-in (downloaded separately). Do you have a suggestion as to how I can connect the other tools as plug-ins?
They do not install as plug-ins.!
But it also depends on your preference option to "Store Presets with Catalog" or not. (which I havn't worked out myself yet!)
Just install the remaining Nik modules as External Editors, then they appear in the "Edit In" menus of Lr.
Read this link.
Thanks. My difficult likely was not knowing to look into "edit in" in the first place. But following your directions, I found the edit tools, and they work