OMC control box / keyswitch connections
BLACK (GROUND)
BLACK WITH YELLOW STRIPE (KILL CIRCUIT)
YELLOW WITH RED STRIPE (STARTER SOLENOID)
PURPLE WITH WHITE STRIPE (CHOKE)
PURPLE (ACCESSORIES)
RED (BATTERY POSITIVE)
I have since diagnosed the 3 pin connector is for the tach:
Purple=positive 12v
Black=ground
gray= send signal from engine
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