The 360 rotor has no direct electrical connections... It is simply a revolving series of magnets with alternating North and South poles faced towards the Stator windings....
The Stator is comprised of six individual windings, Three wound CW and three wound CCW, oriented and connected in pairs so that each pair receives an induced "pulse" of electricity with the same momentary directionality...The next pair of magnetic poles to sweep past the pair has the opposite polarity, and generates an opposite "directional" pulse ( AC generator, commonly called an alternator due to the alternating polarity of the pulses).. The rectifier "sorts" those pulses and only allows DC to flow to the battery .....
The amount of electrical output is a factor of the number of windings, and turns in each coil, (which is a "space to fit them vs wire gauge scenario), the strength of the magnetic field, and the speed at which the magnets "wipe" past the windings, inducing pulses..... More speed (revs) means more voltage.....
Since the number of turns and wire gauge in each coil and the strength of the magnets remains the same, engine speed (revs) is the only variable...
If you are trying to eliminate or reduce ELECTRICAL resistance, rewinding the coils with thicker wire is the method, but the larger wire size will limit the number of turns that will "fit" in that limited space.... And less turns equals less output.....
There is a margin of "room" for this improvement (same number of turns, but slightly larger wire), but personally, I don't believe it worth the effort.... You are better off reducing the current draw by using LED bulbs, etc..... JMHO.... Steve