Hi and welcome to Ninjette!
Gonna need more info to get picture of what’s wrong with bike.
1. Why did you have to put in new ign-switch?
2. What other work was done recently to bike?
3. Do you have voltmeter and know how to use it?
4. Do you have vacuum-tester/gauge and know how to use it?
5. Do you have oscilloscope and know how to use it?