This is my reference for guitar setups - a Japanese "E-series" Squier Stratocaster from the early '80s. This was an era when Fender-America was not doing their best work, while the Japanese models were superb.
More: Squier '62 Stratocaster ...
These are your standard passive volume and tone controls, and two more tone controls that are not so standard, but very useful. Passive controls can only take away, they cannot add. All diagrams are drawn with the pot upside-down - the way you would solder it.
More: Volume & Tone Controls ...