To the remote, footswitch, or EXP/CTL jack of your amplifier, keyboard, or effects pedal. Different pedals and amplifiers require different switch types (Normally Open or Normally Closed) to function correctly.
Alesis ASP-1 MKII universal sustain pedal momentary footswitch 5ft cable ASP1
Universal Sustain Pedal Electric Keyboard Momentary Footswitch Stepper
Dual Momentary Footswitch (FS-6): Skinny Little Twins
Alesis ASP-1 MKII Universal Sustain Pedal and Momentary Footswitch with 5Ft Cabl
Pedal for Musical Instruments Momentary Footswitch
boss fs-5u footswitch pedal
