I made a diagram. Maybe if I hook the trigger in with the kill switch. If so it is hooked up exactly where a condenser would be. May put a condenser in there also to protect it.
This is a good video
If you want to have more control this
https://www.homemade-circuits.com/how-to-make-capacitive-discharge/ but its too much for me.
Or thinking I can use an auto relay to trigger the ignition coil. That would be in place of the Silicon Controlled Rectifier in the first video. Definitely need to find some one-way diodes to protect it.
First tho I am going to take the whole sensor off and see what happens.