Top Gunner Pinout

SOLDER SIDE PARTS SIDE
+12V GND
SPK+ GND
NC NC
+5V P1RIGHT
P2RIGHT COIN1
COIN3 P2LEFT
P1LEFT P2DOWN
P1DOWN P1START
COIN2 P2UP
P1UP P1B2
P2B2 VSYNC
P2START P2B1
P1B1 NC
NC VRED
VGREEN VBLUE
+5V GND
+5V GND
+5V GND

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