Do you have a Honda clone engine or bike and it has a “no spark” issue? I like to use this simple harness and electrical components to bypass the main harness and installed parts. If you get spark after installing this kit, then you can start swapping components from the kit to the main harness. If you swap the CDI, coil, spark plug and still no spark, the issue is most likely within your main wiring harness.
Here is link to the electrical kit:
https://amzn.to/3TYUUX5
Here is link to Nibbi carb:
https://amzn.to/3U0yZi5
Here is link to 125cc engine:
https://amzn.to/3PNTtbk