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<blockquote data-quote="SRAD97750" data-source="post: 220469" data-attributes="member: 425">Kill switch is a single pole, so you should have continuity one way and open circuit with other way. TYPICALLY a kill switch provides a path to ground to the cdi to kill the ignition. THIS IS NOT ALWAYS TRUE. I've seen Yamaha systems that needed the kill switch grounded to run.4 wires from the engine should have two pairs that have resistance between them. Most likely a pulse generator and the stator itself.Coil resistance is checked ground to cap (Secondary) and then ground to input wire. (Primary)You cannot test a CDI, and a voltage regulator/rectifier only can be tested while the bike is running.Get back to us with the five readings requested, and we can point in a better direction. -BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif"&nbsp; class="smilie" loading="lazy" alt=":thumb:" title="Thumb&nbsp; &nbsp; :thumb:" data-shortname=":thumb:" /></blockquote>

[QUOTE="SRAD97750, post: 220469, member: 425"] Kill switch is a single pole, so you should have continuity one way and open circuit with other way. TYPICALLY a kill switch provides a path to ground to the cdi to kill the ignition. THIS IS NOT ALWAYS TRUE. I've seen Yamaha systems that needed the kill switch grounded to run. 4 wires from the engine should have two pairs that have resistance between them. Most likely a pulse generator and the stator itself. Coil resistance is checked ground to cap (Secondary) and then ground to input wire. (Primary) You cannot test a CDI, and a voltage regulator/rectifier only can be tested while the bike is running. Get back to us with the five readings requested, and we can point in a better direction. -BIG DAN:thumb: [/QUOTE]

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