ok the end with 2 blues is 12 v Feed & 1 wire will go to the ECU , the other end the green / red is not used , it also goes to the ECU , the blue goes to the coil as you know , the brown wire that connects to the blue is energized at start up only to feed 12v to the coil , once it is running it gets power through the resister from the blue wire at the opposite end