Gibson '50s Wiring
One of the lesser-known quirks of 1950s Gibson guitars is the way that the controls were wired up: the tone circuit was connected to the output of the volume controls rather than the input (see above).
It might seem like a little thing but this does have an influence on the overall clarity, especially if you like to use your volume controls to ‘play’ the amp. Some also report an improvement in the tone control.
Performing this mod involves moving the tone control connections from the input lugs of the volume controls to the outputs.
With conventionally-wired Gibson-type guitars the output lug will usually be the middle one, but these connections may be reversed if the guitar has previously been modified for independent volume controls.
3. Wiring Secrets Pt.3