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Old May 24th, 2020, 02:30 PM   #100
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

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MOTY - 2018, MOTM - Nov '17
Didn't we already test both sets of ignition wires? If you test signals at end-points and they're good, there's no need to test wiring.

coil RED - you'll want constant +12v fulltime with key ON, wiggle harness between ignition-switch and coils to test for breaks or shorts.
coil GREEN - use oscilloscope or 'noid light to check for grounding-pulses
coil BLACK - use oscilloscope or 'noid light to check for grounding-pulses

Amazon - solenoid light

Even better to test with oscilloscope, should get clean waveform like this with grounding-pulses all way down to zero:



I recall you cut green wire to test at one point? Strange test procedure. Make sure you tie, solder and heat-shrink wrap that cut back together. No crimp joints, no electrical tape. Do it right, do it once, or else there's always time to do it again later. If you have bad signal, then inspect every single inch of wire from end to end wire all 360-degrees around to make sure there's no exposed section rubbing on frame or other wires. Also measure resistance between ends of wire. Have assistant grab and wiggle wire in between. Signal shouldn't change.
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