You just hold the tip up against the plug wire.
Sometimes lit up the whole window and sometimes only half way.
Btw I think someone asked about the coil..
I just replaced it 3 years ago with a brand new one but it could have been made in China or Mexico on a Friday night shift.
I guess my next step is to check if power is still going to the coil after it dies. Thanks Again 🙏🏻