Typical 8-pin DIN Input (Leslie Cabinet)
Pin 1 - Rotary/Main Signal; Input
Pin 2 - Leslie Detect (Usually tied to pin 5)
Pin 3 - Audio Ground
Pin 4 - Non-rotary/Secondary Input (not used in any current Leslie model)
Pin 5 - Digital Ground
Pin 6 - Turn On
Pin 7 - Fast Trigger
Pin 8 - Slow Trigger