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81 Kz750 Ignition spark 15 Aug 2016 14:04 #738788

  • Hamman
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Hey guys, wiring in my MotoGadget M-unit. Got the bike to turn on and turn over. Getting great spark too! The bike came with Dyna ign. coils from the PO. When I turn the key switch off i get a small little spark out of the plugs. Is this ok? Normal? Should I be concerned about leaving it this way?

Also, off of the rectifier is a single lead connector. Mine is white, but I think the OEM ones came white with red tracer. I see on the diagrams this just goes back to the + battery terminal. Does anyone know what the reasoning for this is?

Thanks
1981 KZ750LTD H2

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Last edit: by Hamman. Reason: added info

81 Kz750 Ignition spark 15 Aug 2016 18:51 #738817

  • SWest
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It's normal to get a spark when the switch turns off. The built up charge in the coil will discharge at that moment. Without a pic, I can't tell you about the R/R.
Steve

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81 Kz750 Ignition spark 15 Aug 2016 23:10 #738828

  • loudhvx
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If it has a stock electronic ignition, it is not normal to get spark when turning the key off. The coils don't get charged until the crank is turning. This can indicate a problem with the igniter.

It might be normal if you have a Dyna S ignition. You said you have Dyna coils, so maybe someone installed a Dyna S ignition as well.

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Last edit: by loudhvx.

81 Kz750 Ignition spark 16 Aug 2016 08:06 #738863

  • Nessism
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Dyna S does that. Other brands of aftermarket ignition may too.

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81 Kz750 Ignition spark 16 Aug 2016 08:17 #738870

  • Hamman
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Awesome. Thanks guys. It does have the full Dyna setup. Ignition and coils. I figured out where to put the plug coming off the R/R. It traces back and plugs into the starter solenoid. Thanks!!!
1981 KZ750LTD H2

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