Finding out how an M6 controller works

Figuring out how an M6 controller works.
Yellow led for relay consumers generator, pin 11.
Green led is + contact for alternator IG, fuel pump and solenoid, pin 18.
Red led is to stop, pin 17
Position automatic, on the first attempt the black wire (D+) held to ground so no confirmation that the engine has started.
Second attempt the black wire (D+) is released.
Green/red wire disconnected to stop the generator