Full installation manual of the older Fernandes FSK-101 Humbucker 2-mode Sustainer system produced from 2001 until 2018, with the trim pots on the back of the board. This system is now discontinued.
 
Contains information, troubleshooting, wiring diagrams and guidelines for installing the system in different kinds of guitars.
 
This is the system included in most Fernandes Elite, Deluxe Sustainer and Pro guitar series, including Ravelle, Monterey, Revolver (2 humbucker models), Vertigo, Vortex and all Pro series.