4 Wires from magneto on 91 kdx200...

[KDX200fromAUS]

My bike has weak spark and i 'm pretty sure its the stator, but i am rewiring the whole thing to put on lights, indicators etc....but all the wiring diagrams i can find have only 3 wires coming from the magneto....any one know how many there should be and where they should go ??

1- red/white- white plug to coil
2- black -same white plug
3-brown- ?? ( i assume lighting?)
4- green- ?? (lighting too i spose?)

plus the neutral wire...

any help ??
cheers