Motorcycle Questions? Ask a Mechanic.
Hi Adam, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially and as it would appear to be an electrical/ignition issue, then proposed preliminary tries/checks (if have not been done) :
Hi again Adam,
Incidentally, I re-checked the wiring diagram and there is another coil co-located with the stator that produces high pulsating voltage to charge the cpacitor of the CDI.
Almost always, a switch would have continuity between its 2 terminals if and only if in the ON position. Thus there should be no reading/continuity when in OFF.
Other than these switches, check also the neutral relay and its diodes.
Interesting.....even my copy of the wiring diagram shows only 2 + starter relay.
Post back with clear closeup picture(s) of the "...relay...blue in color and has (2) green, a brown and a black wire going to it...". Please click HERE.
Bear with me, let me check all other versions / years and see if a wiring would match the 3-relay harness.
May not be that immediate as would be mobile later.
Based on the diagram, the reverse switch is to ground hence only 1 wire from the reverse switch; a green/light blue wire to the reverse indicator light.
Yes; 1 wire from the switch to the reverse indicator light.
Unfortunately, no. None of the service manuals and wiring diagrams that I have uses a 3-relay system.
Still, based on the standard wiring of the YFM series:
Can you please trace/confirm to/from where the "...relay...blue in color and has (2) green...wire..."?
Bear with me, let's re-start; let's review and re-check the basics:
Since the primary concern is "...no spark...", then consider just wiring/connecting the pickup, exciter coils to the CDI and the CDI to the ignition coil.