Count your rectifiers. If there are four pairs, OEM is obviously rectifying that termination. I personally disfavor unbalanced phases for the sake of the voltage regulator even if it is ECU contained. To keep this a bit less technical I have seen overheated phase windings due to a disordered phase 4 conductor. With a principal loading route still connected a total phase connection does not exist but amplified phase inequality due to small #1 vs Large #2 over long periods of time have impacts. I used to use TO5 30-amp rectifiers both anode and cathode connections to fully rectify the stator on Ford 3G and 4G units.
