Thanks very much! And on a fragment of the diagram, they had a fan wire brown, so I do believe this is just what I needed! The capacitor is labeled as you say on the terminals. And I will sure label the wires, too. I know better than to think I can remember anything important, LOL.

The wiring diagram has been eaten by little bugs, and I need to replace the capacitor. There are three wires, brown, red and white, but I don't know which one goes to which connection. The capacitor has a two pronged, a three pronged, and a four pronged connector, but the wires only have a single cl...