Wiring: cap in series with resistor or conversely. The whole from hot to ground. Be aware that as long as the resistor value is not very low, tone caps have a subtle action (affecting only the harmonics in the best cases and with possibly no perceived influence if the sound chain used is not transparent).
If you find the 0/10 position too muddy, check the Fender "Grease Bucket" circuit: it uses a 4.7k ballast resistor preventing the pot to ever go to 0.
Multi-position tone switches: check the Gretsch "mud switch" with an ON/OFF/ON control allowing a no load wiring in center position. Not very useful with the cap values initially used but can give interesting "mid promoting" circuits with lower value capacitors, like 1/2,2/3,3/4,7/10 nF instead of the usual 22/33/47/100 nF tone caps.
More info on request. I tinker with such things (or more complex tone circuits) for decades.