Hi and welcome to FixYa,
To my understanding, there are only 2 wires from the ignition pulse generator:
- yellow - pulsating 0.5 VAC when cranking; and
- white/yellow - ground.
A couple more of initial checks:
- IGN +12 on the black/white wires of the ignition coils;
- IGN +12 on the 3 wires of the engine stop relay other than the red/orange;
- 0 volts on the red/orange (red/white) wire from the BAS (bank angle sensor).
Good luck and thank you for asking FixYA.