You only need 4 wires from the engine 2 from magneato and 2 from timing box. Take off engine cover on left side of engine to see where wires go. The engine I just finished wiring up (125 GPX MOTO) the colors where BLUE wire with WHITE tracer and GREEN wire with WHITE tracer, go to the timing box. And the BLACK wire with the RED tracer and the RED wire with the WHITE tracer, go to the magneato. Hope this helps if not let me know and I will go through it with you.