Join Date: Jun 2010
Location: Simpsonville, SC
Bad wiring, bad coil, bad pick-up, bad CDI unit................
If the bike turns over, then the main fuse is good.....therefore it's not a fuse.
Like others said, check the red wire for 12VDC at both coils and the CDI.
With the bike in neutral, check for continuity to ground of the black/white wire on the CDI. Also check continuity to ground of the black/yellow wire. Both of these wires should show continuity to ground.
pick-up coils test; pull the 4 pin connector apart and test resistance between B/Y and B and then between B/W and B/R. Should be around 350~550 ohms (I believe) Also check each of the 4 pick-up wires to ground. Should read inf.
Check resistance on coils: primary should be around 2 ohms and secondary should be 20k~30k ohms. Other than that, I would have to guess faulty CDI...........