Welcome
Interactive pinout
Click any connector or component on the schematic to see its details. Pin pads on the board and the matching cells in the right-side tables will light up at the same time.
Use the 120V / 240V toggle in the header to control which voltage column is highlighted for the dual-voltage connectors (Pump #1, #2, #3).
Pin numbers transcribed from your SpaBuilders SC-MJP photo. Always verify on the physical board before wiring.