Noel, add the following paragraph to the Tele harness page.  Ask me to be present and I will tell you where it should go. High definition Tone control is a very usable tone control because it's effect is not as savage as a regular Tone control. Unlike normal Tone controls it can be used at position '0' to get a smokey soulful tone flavour without robbing the sound of important high mids. In comparison, regular tone controls turn the sound to mud because they severely cut important upper midrange frequencies that give notes good definition. Some players think it's not working because it's a subtle control and may take some getting used to before it's effect comes into focus. However when you finally ‘get it' you (like so many before) might find it very pleasing.Sliding the switch from Hi-Def to Normal (.022) will return the tone control to normal.