Flower Pinout

SOLDER SIDE PARTS SIDE
GND GND
GND GND
+5V +5V
+5V +5V
+12V +12V
SPK- SPK+
P1UP P1DOWN
P1LEFT P1RIGHT
P1B1 P1B3
P1B2 NC
P2UP P2DOWN
P2LEFT P2RIGHT
P2B1 P2B3
P2B2 NC
COIN1 P1START
P2START NC
NC NC
COUNT1 NC
VSYNC VBLUE
VGREEN VRED
GND GND
GND GND

Pinout is ordered right to left when looking at the parts side of the board with the edge connector facing away.